ps-2.kev009.comps-2.kev009.com/rs6000/manuals/SP/Vol_2_Maintenance...MAP 0290: 332 MHz SMP Node...

RS/6000 SP IBM

Maintenance Information Volume 2,Maintenance Analysis Procedures

GA22-7376-01

RS/6000 SP IBM

Maintenance Information Volume 2,Maintenance Analysis Procedures

GA22-7376-01

Note!

Before using this information and the product it supports, be sure to read the general information under “Notices” on page ix.

Second Edition (February 1999)

This is a major revision of GA22-7376-00.

This edition applies to the IBM RS/6000 SP Systems, Version 3 Release 1 of IBM Parallel System Support Programs for AIX(5765-529), which runs on IBM RS/6000 SP, and to all subsequent releases and modifications until otherwise indicated in new edi-tions.

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Copyright International Business Machines Corporation 1994, 1999. All rights reserved.Note to U.S. Government Users — Documentation related to restricted rights — Use, duplication or disclosure is subject torestrictions set forth in GSA ADP Schedule Contract with IBM Corp.

Contents

Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixTrademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixSafety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xPersonal ESD Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Electronic Emissions Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiFederal Communications Commission (FCC) Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . xiEuropean Union (EU) Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiUnited Kingdom Telecommunications Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . xi

Notice to Customers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiIndustry Canada Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiFor Installations in Japan: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiElectromagnetic Interference (EMI) Statement - Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiRadio Protection for Germany . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

About This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvWho Should Use This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvUser's Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvHow to Use This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvGetting More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviiGA22-7376-00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviiGA22-7376-01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

Chapter 1. Maintenance Analysis Procedures (MAPs) . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Safety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Lockout Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Lockout Procedure for SEPBU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Lockout/Tagout Procedure for PDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Lockout/Bagout Procedure for PDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3MAP 0100: Start of Service Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4MAP 0110: Supervisor Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10MAP 0120: Supervisor Bus Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19MAP 0130: Processor Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30MAP 0140: Thin Node/Thin Node 2 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50MAP 0150: 120/160 MHz Thin Node Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-60MAP 0160: Thin Processor Node Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-69MAP 0170: Thin Processor Node Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74MAP 0180: Thin Processor Node dc Short/Open . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-84MAP 0190: Processor Node Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-87MAP 0200: Processor IPL Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-94MAP 0210: Wide Processor Node Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-98MAP 0220: Wide Processor Node Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-105MAP 0230: Wide Processor Node Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-110MAP 0240: Wide Processor Node dc Short/Open . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-120MAP 0250: 604 or 604e High Node Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-124MAP 0260: 604 or 604e High Node Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-130MAP 0270: 604 or 604e High Node Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-135MAP 0280: 604 or 604e High Node Minimum Configuration . . . . . . . . . . . . . . . . . . . . . 1-145

Copyright IBM Corp. 1994, 1999 iii

MAP 0290: 332 MHz SMP Node Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-160MAP 0300: 332 MHz SMP Node Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-169MAP 0310: 332 MHz SMP Node Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-177MAP 0320: 332 MHz SMP Node Minimum Configuration . . . . . . . . . . . . . . . . . . . . . . . 1-186MAP 0330: POWER3 SMP Thin and Wide Node Environment . . . . . . . . . . . . . . . . . . . 1-191MAP 0340: POWER3 SMP Thin and Wide Node Power . . . . . . . . . . . . . . . . . . . . . . . 1-200MAP 0350: POWER3 SMP Thin and Wide Node Control . . . . . . . . . . . . . . . . . . . . . . 1-208MAP 0360: POWER3 SMP Thin and Wide Node Minimum Configuration . . . . . . . . . . . . . 1-217MAP 0370: Main Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-222MAP 0380: Power Distribution Unit (PDU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-225MAP 0390: Supervisor Power Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-229MAP 0400: Supervisor Power 12 V dc Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-237MAP 0410: Supervisor Power 24 V dc Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-244MAP 0420: Main Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-247MAP 0430: dc Power Loss from Bulk dc Power Supply(s) . . . . . . . . . . . . . . . . . . . . . . 1-250MAP 0440: Short in 48 V dc Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-257MAP 0450: Frame Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-262MAP 0460: Scalable Electrical Power Base Unit (SEPBU) . . . . . . . . . . . . . . . . . . . . . . 1-265MAP 0470: SEPBU Power Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-280MAP 0480: Open in 48 V dc Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-283MAP 0490: Network Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-286MAP 0500: Ethernet LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-288MAP 0510: Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-294MAP 0520: Switch Assembly Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-301MAP 0530: Switch Assembly Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-313MAP 0540: Switch Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-322MAP 0550: Dependent Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-351MAP 0560: Block Multiplexer Channel Adapter (BMCA) . . . . . . . . . . . . . . . . . . . . . . . 1-353MAP 0570: End of Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-357MAP 1520: Main Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-359MAP 1540: Minimum Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-360

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-1

iv RS/6000 SP MAPs

Figures

1-1. 8-LED Frame Supervisor Card LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-111-2. RS/6000 SP Supervisor Subsystem Diagram (PDU) . . . . . . . . . . . . . . . . . . . . . . 1-121-3. RS/6000 SP Supervisor Subsystem Diagram (SEPBU) . . . . . . . . . . . . . . . . . . . . 1-131-4. High Node Supervisor Card LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-311-5. 332 MHz SMP Node Supervisor Card LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-321-6. POWER3 SMP Node Supervisor Card LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 1-321-7. Thin Node High Level Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-401-8. Thin Node 2 High Level Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-411-9. 120 and 160 MHz Thin Node High Level Diagram . . . . . . . . . . . . . . . . . . . . . . . 1-42

1-10. Wide Node High Level Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-431-11. 604 or 604e High Node High Level Component Diagram . . . . . . . . . . . . . . . . . . . 1-441-12. 332 MHz SMP Node High Level Component Diagram . . . . . . . . . . . . . . . . . . . . . 1-451-13. POWER3 SMP Thin and Wide Node High Level Component Diagram . . . . . . . . . . . . 1-461-14. Thin Node Supervisor Control Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-541-15. 120 or 160 MHz Thin Node Supervisor Control Cable . . . . . . . . . . . . . . . . . . . . . 1-631-16. Wide Node Supervisor Control Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1021-17. Rear View of Power Distribution Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2221-18. Rear View of Scalable Electrical Power Base Unit . . . . . . . . . . . . . . . . . . . . . . . 1-2231-19. Front View of 49-Inch Frame Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2231-20. RS/6000 SP PDU Power Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2261-21. Wiring Diagram of RS/6000 SP Power Distribution Unit . . . . . . . . . . . . . . . . . . . . 1-2281-22. PDU Supervisor Power + 12 V dc Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2371-23. PDU + 24 V dc Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2441-24. PDU + 24 V dc Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2471-25. PDU + 48 V dc Power Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2501-26. PDU 48 Volts Distribution Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2571-27. SEPBU Power Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2671-28. Typical Ethernet TTP Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2891-29. High Performance Switch (HiPS) Assembly High-Level Diagram . . . . . . . . . . . . . . . 1-2961-30. Scalable POWERparallel Switch (SPS) Assembly High-Level Diagram . . . . . . . . . . . 1-2971-31. HiPS Wrap Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2991-32. SPS Wrap Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3001-33. HiPS Switch Supervisor Control Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3051-34. SPS Inner Chassis and Front Chassis Cables . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3061-35. Switch Connectivity Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3201-36. HiPS 2.0 Interposer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3201-37. BMCA Cabling to Single Processor Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3531-38. BMCA Cabling to Multiple Processor Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-355

Copyright IBM Corp. 1994, 1999 v

vi RS/6000 SP MAPs

Tables

1-1. 8-LED Frame Supervisor LED Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-101-2. 4-LED Frame Supervisor LED Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-111-3. 604 or 604e High Node LED Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-301-4. 332 MHz SMP Node LED Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-311-5. POWER3 SMP Node LED Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-321-6. SP Processor Nodes and Their Functionally Equivalent RS/6000 Models . . . . . . . . . . 1-331-7. Cable Continuity Check Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-781-8. Cable Continuity Check Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1141-9. Inner Chassis Cable Continuity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-318

1-10. Front Chassis Cable Continuity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3181-11. HiPS Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3241-12. SPS Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3271-13. Service Request Number (SRN) Table for Switch Adapters . . . . . . . . . . . . . . . . . . 1-3321-14. Proper Serial Number to Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-358

Copyright IBM Corp. 1994, 1999 vii

viii RS/6000 SP MAPs

Notices

References in this publication to IBM products, programs, or services do not imply that IBM intends tomake these available in all countries in which IBM operates.

Any reference to an IBM product, program, or service is not intended to state or imply that only IBM'sproduct, program, or service may be used. Any functionally equivalent product, program, or service thatdoes not infringe any of IBM's intellectual property rights may be used instead of the IBM product,program, or service. Evaluation and verification of operation in conjunction with other products, exceptthose expressly designated by IBM, are the user's responsibility.

IBM may have patents or pending patent applications covering subject matter in this document. The fur-nishing of this document does not give you any license to these patents. You can send license inquiries, inwriting, to:

IBM Director of LicensingIBM CorporationNorth Castle DriveArmonk, NY 10504-1785USA

Any pointers in this publication to non-IBM Web sites are provided for convenience only, and do not in anymanner serve as an endorsement of these web sites. IBM accepts no responsibility for the content or useof non-IBM Web sites specifically mentioned in this publication or accessed through an IBM Web site thatis mentioned in this publication.

Trademarks

The following terms are trademarks of the International Business Machines Corporation in the UnitedStates or other countries or both:

AIX ESCON IBM IBMLink LoadLeveler Micro Channel POWERparallel POWERserver POWERstation RS/6000

RS/6000 Scalable POWERparallel SystemsScalable POWERparallel Systems

SP

Microsoft, Windows, Windows NT, and the Windows logo are trademarks of Microsoft Corporation in theUnited States and other countries.

UNIX is a registered trademark in the United States and other countries licensed exclusively throughX/Open Company Limited.

Adobe, Acrobat, Acrobat Reader, and PostScript are trademarks of Adobe Systems, Incorporated.

Copyright IBM Corp. 1994, 1999 ix

Netscape is a registered trademark of Netscape Communications Corporation in the United States andother countries.

Other company, product, and service names may be trademarks or service marks of others.

Safety Notices

RS/6000 SP: Maintenance Information, Volume 1 contains a list of all safety notices pertaining to SP hard-ware maintenance from Volumes 1, 2, 3, and 4.

Translations of these notices are also provided in Volume 1.

Personal ESD Requirements

The processor uses FRUs that are known to be sensitive to electrostatic discharge (ESD). To preventESD damage to FRUs or to prevent system failures, observe the following procedures:

� Keep the FRU in its original static-dissipative shipping container until the FRU is ready to be installedin the system. Move the static-dissipative container near the location where the FRU is to be installed(within ESD wrist strap distance). If the FRU must be put down for any reason, first place it in itsstatic-dissipative container or place it on the static-dissipative mat.

� Open only the covers that are necessary to complete the task. Any time a cover is open the servicerepresentative and all people in the area must be ESD-safe. If power is switched on, or if removing orexchanging any FRU, always use the ESD kit (part 93F2649).

1. Put on the ESD wrist strap.2. Attach the ESD cord to the wrist strap.3. Attach the ESD mat to the wrist strap, if required.4. Attach the insulated clip to the ESD cord.5. Attach the insulated clip to the frame holes labeled ESD. If the frame holes are not available, use

a grounding point on the frame.

x RS/6000 SP MAPs

Electronic Emissions Notices

Federal Communications Commission (FCC) Statement

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuantto Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmfulinterference when the equipment is operated in a commercial environment. This equipment generates,uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruc-tion manual, may cause harmful interference to radio communications. Operation of this equipment in aresidential area is likely to cause harmful interference, in which case the user will be required to correctthe interference at his own expense.

Properly shielded and grounded cables and connectors must be used in order to meet FCC emissionlimits. IBM is not responsible for any radio or television interference caused by using other than recom-mended cables and connectors or by unauthorized changes or modifications to this equipment. Unauthor-ized changes or modifications could void the user's authority to operate the equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:(1) this device may not cause harmful interference, and (2) this device must accept any interferencereceived, including interference that may cause undesired operation.

European Union (EU) Statement

This product is in conformity with the protection requirements of EU Council Directive 89/336/EEC on theapproximation of the laws of the Member States relating to electromagnetic compatibility. The manufac-turer cannot accept responsibility for any failure to satisfy the protection requirements resulting from anon-recommended modification of the product, including the fitting of option cards supplied by third parties.Consult with your dealer or sales representative for details on your specific hardware.

This product has been tested and found to comply with the limits for Class A Information TechnologyEquipment according to CISPR 22 / European Standard EN 55022. The limits for Class A equipment werederived for commercial and industrial environments to provide reasonable protection against interferencewith licensed communication equipment.

Attention: This is a Class A product. In a domestic environment this product may cause radio interferencein which case the user may be required to take adequate measures.

United Kingdom Telecommunications Safety Requirements

Notice to Customers

This apparatus is approved under approval number NS/G/1234/J/100003 for indirect connection to publictelecommunications systems in the United Kingdom.

Copyright IBM Corp. 1994, 1999 xi

Industry Canada Compliance Statement

This Class A digital apparatus meets the requirements of the Canadien Interference-Causing EquipmentRegulations.

Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matérielbrouilleur du Canada.

For Installations in Japan:

The following is a summary of the VCCI Japanese statement in the box above. This is a Class A productbased on the standard of the Voluntary Control Council for Interference by Information Technology Equip-ment (VCCI). If this equipment is used in a domestic environment, radio disturbance may arise. Whensuch trouble occurs, the user may be required to take corrective actions.

Electromagnetic Interference (EMI) Statement - Taiwan

The following is a summary of the EMI Taiwan statement above.

Warning: This is a Class A product. In a domestic environment this product may cause radio interferencein which case the user will be required to take adequate measures.

Radio Protection for Germany

Dieses Gerät ist berechtigt in Übereinstimmung mit Dem deutschen EMVG vom 9.Nov.92 dasEG–Konformitätszeichen zu führen.

Der Aussteller der Konformitätserklärung ist die IBM Germany.

Dieses Gerät erfüllt die Bedingungen der EN 55022 Klasse A. Für diese von Geräten gilt folgendeBestimmung nach dem EMVG:

Geräte dürfen an Orten, für die sie nicht ausreichend entstört sind, nur mit besonderer Genehmigung desBundesministers für Post und Telekommunikation oder des Bundesamtes für Post und Telekommunikationbetrieben werden. Die Genehmigung wird erteilt, wenn keine elektromagnetischen Störungen zu erwartensind.

xii RS/6000 SP MAPs

(Auszug aus dem EMVG vom 9.Nov.92, Para.3, Abs.4)

Hinweis

Dieses Genehmigungsverfahren ist von der Deutschen Bundespost noch nicht veröffentlicht worden.

Electronic Emissions Notices xiii

xiv RS/6000 SP MAPs

About This Book

This book is to help you, as a customer engineer:

� Isolate RS/6000 SP failures (as well as 9076 SP1 failures in an SP1/SP2 environment

� Perform isolation and verification tests and identify field replaceable unit (FRU) locations

This book is to be used with:

� IBM RS/6000 SP: Maintenance Information, Volume 1, Installation and Relocation (GA22-7375),(referred to, throughout this publication, as RS/6000 SP: Maintenance Information, Volume 1). Volume1 contains information to help you Identify RS/6000 SP frame types and components, perform installa-tion and relocation procedures, and maintenance agreements and qualifications.

� IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures(GA22-7377), (referred to, throughout this publication, as RS/6000 SP: Maintenance Information,Volume 3). Volume 3 contains information to help you perform isolation and verification tests, identifyfield replaceable unit (FRU) locations, and remove and replace FRUs.

� IBM RS/6000 SP: Maintenance Information, Volume 4, Parts Catalog (GA22-7378), (referred to,throughout this publication, as RS/6000 SP: Maintenance Information, Volume 4). Volume 4 contains alist of RS/6000 SP parts and FRUs with corresponding figures that contain indexed descriptions andpart numbers.

For a list of other SP books and related information, see the bibliography in the back of RS/6000 SP:Maintenance Information, Volume 1.

Who Should Use This Book

This book is intended for the product-trained Customer Engineer (CE). The procedures for RS/6000 SPand feature components described in this book represent a part of the overall support structure of theRS/6000 SP product. This book is intended to support the RS/6000 SP product and SP1/SP2 coexistencesystems, in which SP2 code is utilized. The SP1 version of this book (IBM 9076 Scalable POWERparallelSystems: Maintenance Information, SY66-0299) should be used for ordering SP1 parts, or if SP1 code isutilized.

User's Responsibilities

Before calling the IBM customer engineer, the system administrator should use the problem determinationsection of the IBM Parallel System Support Programs for AIX: Diagnosis Guide, SC23-3866 for initialproblem determination. If there is nothing wrong with the customer operating procedures, customer-supplied cables, or power source, the customer should call an IBM customer engineer.

How to Use This Book

When performing RS/6000 SP maintenance, follow Chapter 1, “Maintenance Analysis Procedures (MAPs)”on page 1-1.

Beginning with the “MAP 0100: Start of Service Call” on page 1-4, isolate the problem to one or more ofthese RS/6000 SP components:

� Supervisor Subsystem

Copyright IBM Corp. 1994, 1999 xv

� Processor Node � Power Subsystem� High Voltage Transformer (World Trade)� Ethernet Local Area Networks (LANs)

� High-Performance Switch� Micro Channel or PCI Adapter

If you cannot determine the failure's cause, you should request the assistance of the RS/6000 SP FieldSupport Center.

Getting More Information

This book and other RS/6000 SP hardware and software documentation are available both online and inhardcopy from:

� The RS/6000 website at http://www.rs6000.ibm.com

� The Resource Center on the PSSP product media

� The Service Information Library (SIL)

� Hardcopy and CDROM versions orderable from IBM

� IBM internal use versions available on MKTTOOLS

For details, see the bibliography in RS/6000 SP: Maintenance Information, Volume 1.

xvi RS/6000 SP MAPs

Summary of Changes

GA22-7376-00

This edition, along with GA22-7377-00 and GA22-7378-00, replaces GC23-3904-08 and makes it obsolete.Changes found in this edition include:

� Added SP-attached server (RS/6000 Machine Type 7017-S70 and S7A) node information.

� The Maintenance Information manuals, Volumes 1, 2, and 3, (GC23-3903 and GC23-3904) were reor-ganized into 4 volumes:

– IBM RS/6000 SP: Maintenance Information, Volume 1, Installation and Relocation, GA22-7375-00

– IBM RS/6000 SP: Maintenance Information, Volume 2, Maintenance Analysis Procedures,GA22-7376-00

– IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures,GA22-7377-00

– IBM RS/6000 SP: Maintenance Information, Volume 4, Parts Catalog, GA22-7378-00

GA22-7376-01

This edition replaces GA22-7376-00 and makes it obsolete. Changes found in this edition include:

� Added POWER3 SMP thin and wide node information.

Copyright IBM Corp. 1994, 1999 xvii

xviii RS/6000 SP MAPs

Chapter 1. Maintenance Analysis Procedures (MAPs)

Safety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Lockout Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Lockout Procedure for SEPBU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Lockout/Tagout Procedure for PDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Lockout/Bagout Procedure for PDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3MAP 0100: Start of Service Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4MAP 0110: Supervisor Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10MAP 0120: Supervisor Bus Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19MAP 0130: Processor Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30MAP 0140: Thin Node/Thin Node 2 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50MAP 0150: 120/160 MHz Thin Node Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-60MAP 0160: Thin Processor Node Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-69MAP 0170: Thin Processor Node Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74MAP 0180: Thin Processor Node dc Short/Open . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-84MAP 0190: Processor Node Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-87MAP 0200: Processor IPL Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-94MAP 0210: Wide Processor Node Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-98MAP 0220: Wide Processor Node Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-105MAP 0230: Wide Processor Node Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-110MAP 0240: Wide Processor Node dc Short/Open . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-120MAP 0250: 604 or 604e High Node Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-124MAP 0260: 604 or 604e High Node Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-130MAP 0270: 604 or 604e High Node Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-135MAP 0280: 604 or 604e High Node Minimum Configuration . . . . . . . . . . . . . . . . . . . . . 1-145MAP 0290: 332 MHz SMP Node Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-160MAP 0300: 332 MHz SMP Node Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-169MAP 0310: 332 MHz SMP Node Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-177MAP 0320: 332 MHz SMP Node Minimum Configuration . . . . . . . . . . . . . . . . . . . . . . . 1-186MAP 0330: POWER3 SMP Thin and Wide Node Environment . . . . . . . . . . . . . . . . . . . 1-191MAP 0340: POWER3 SMP Thin and Wide Node Power . . . . . . . . . . . . . . . . . . . . . . . 1-200MAP 0350: POWER3 SMP Thin and Wide Node Control . . . . . . . . . . . . . . . . . . . . . . 1-208MAP 0360: POWER3 SMP Thin and Wide Node Minimum Configuration . . . . . . . . . . . . . 1-217MAP 0370: Main Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-222MAP 0380: Power Distribution Unit (PDU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-225MAP 0390: Supervisor Power Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-229MAP 0400: Supervisor Power 12 V dc Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-237MAP 0410: Supervisor Power 24 V dc Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-244MAP 0420: Main Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-247MAP 0430: dc Power Loss from Bulk dc Power Supply(s) . . . . . . . . . . . . . . . . . . . . . . 1-250MAP 0440: Short in 48 V dc Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-257MAP 0450: Frame Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-262MAP 0460: Scalable Electrical Power Base Unit (SEPBU) . . . . . . . . . . . . . . . . . . . . . . 1-265MAP 0470: SEPBU Power Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-280MAP 0480: Open in 48 V dc Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-283MAP 0490: Network Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-286MAP 0500: Ethernet LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-288MAP 0510: Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-294MAP 0520: Switch Assembly Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-301MAP 0530: Switch Assembly Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-313MAP 0540: Switch Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-322

Copyright IBM Corp. 1994, 1999 1-1

MAP 0550: Dependent Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-351MAP 0560: Block Multiplexer Channel Adapter (BMCA) . . . . . . . . . . . . . . . . . . . . . . . 1-353MAP 0570: End of Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-357MAP 1520: Main Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-359MAP 1540: Minimum Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-360

This chapter provides information for identifying problems and guides you to the most likely failed FieldReplaceable Unit (FRU). The MAPs then refer you to the FRU Removal/Replacement procedures for thecorrective action.

Safety Notices

The following practices are necessary to ensure safety of all service personnel while servicing thismachine.

Lockout Procedures

Lockout Procedure for SEPBU

This procedure ensures that no power is present in the machine, and that primary power can not be acci-dentally applied. This procedure is referenced as required by the maintenance procedures.

1. Make sure the main power switch is in the Off (‘0’) position for this frame.

2. The following measurements are to be taken at the ac filter (located inside the rear cover at thebottom of the frame). Measure phase-to-phase ac voltage between test points Z1 and Z2. Repeatmeasurement for test points Z1 and Z3. Repeat measurement between test points Z2 and Z3.

3. The purpose here is to guarantee that initially primary power is present at the test points. If the volt-ages measured in Step 2 indicate that primary power is not present, have customer switch on powerfor this frame, then go back to Step 2.

4. Continue with Step 5 of “Lockout/Tagout Procedure for PDU” or “Lockout/Bagout Procedure for PDU”on page 1-3.

Note: Be sure that the ac line cord is disconnected from the customer's main power outlet beforeattaching the cord to the SEPBU.

Lockout/Tagout Procedure for PDU

This procedure ensures that no power is present in the machine, and that primary power can not be acci-dentally applied. This procedure is referenced as required by the MAPs.

1. Use a multimeter with the pair of high-voltage probes (part number 93F2731). Set the multimeter tothe highest ac voltage setting.

2. The following measurements are to be taken at the ac filter (located inside the rear cover at thebottom of the frame). Measure phase-to-phase ac voltage between test points O1 and O2. Repeatmeasurement for test points O1 and O3. Repeat measurement between test points O2 and O3.


4. Switch off frame circuit breaker (located inside rear cover near bottom) to disengage ac power insideframe.

1-2 RS/6000 SP MAPs

5. Now have customer switch off primary power to this frame from an external circuit breaker.

6. Verify that there is no power present by repeating the measurements made in Step 2. If power is stillpresent, inform customer of this fact and return to Step 4.

7. Now that the proper circuit breaker has been located, install a lock on this circuit breaker to lockoutthe circuit breaker, OR if a lock is not available, attach a DO NOT OPERATE tag (S229-0237) directlyto the circuit breaker.

8. You may now perform maintenance on primary power components per the instructions.

Lockout/Bagout Procedure for PDU

This may be used as an alternative to the Lockout/Tagout Procedure to ensure that no power is present inthe machine, and that primary power can not be accidentally applied. This procedure is also referenced asrequired by the MAPs.

1. Use a multimeter with the pair of high-voltage probes (part number 93F2731). Set the multimeter tothe highest ac voltage setting.

2. The following measurements are to be taken at the ac filter (located inside the rear cover at thebottom of the frame). Measure phase-to-phase ac voltage between test points O1 and O2. Repeatmeasurement for test points O1 and O3. Repeat measurement between test points O2 and O3.


4. Switch off frame circuit breaker (located inside rear cover near bottom) to disengage ac power insideframe.

5. Now locate plug for this frame, and remove plug from receptacle.

6. Verify that there is no power present by repeating the measurements made in Step 2. If power is stillpresent, check with customer or other maintenance personnel before reconnecting plug from Step 5.Return to Step 5 to locate the correct plug.

7. Now that the correct plug has been removed from the receptacle, install a safety lockout bag (partnumber 74F9606) over the plug and lock the bag closed.

8. You may now perform maintenance on primary power components per the instructions.

Chapter 1. Maintenance Analysis Procedures (MAPs) 1-3

MAP 0100: Start of Service Call

MAP 0100: Start of Service CallThis MAP is the starting point for all service calls. It directs you to other MAPs and service information.Refer to Chapter 2 for locations.

001

Read the following notes before continuing:

Attention: Processor nodes should never be powered-on without the top cover seated in its normal posi-tion to protect internal components.

Attention: Some 48-volt power cables have in-line circuit breakers. Ensure the in-line circuit breakerswitch is in the Off (O) position before connecting or disconnecting 48-volt power cables from the node.

Attention: Components in the frame are susceptible to damage from static discharge. Always use an ESDwristband when working inside frame covers.

Attention: The MAPs explain restrictions for performing concurrent maintenance on the system. Notifycustomer where indicated before disconnecting or powering-down parts of the system so that criticalinformation/applications of the customer will not be lost during maintenance/repair.

Attention: Servicing processor nodes with the switch assembly feature (parallel environment) requires thatparallel processing must be stopped before removing the nodes from the active configuration. Powering offprocessor nodes without removing them from the active partition will cause all parallel jobs in that partitionto terminate and switch initialization to rerun.

– Problem Determination (found in IBM Parallel System Support Programs for AIX: Diagnosis Guide

should be performed before using the following MAPs to reduce the likelihood that the problem is due toa software or user error.

– When you need to power-off a processor node, which has not previously been shut down or flashing888, check with the Customer to see if the node can be fenced and shut down; otherwise, maintenancemust be deferred.

– Concurrent service operations can be done on the following boundaries without interfering with opera-tion of other parts of the system:

� Bulk power supply or power module (only one can be removed at a time)

� Frame supervisor card

� Processor node (only when not in the active configuration)

� Switch with partitions—for service within a partition, see "Viewing Switch Partitions" in IBM RS/6000SP: Maintenance Information, Volume 3, Locations and Service Procedures.

– For additional information, check the error log(s) of the failing node(s) by issuing the following commandfrom an AIX window open for that node:

errpt -a | pg

See Step 002 on page 1-5 for more information and notes concerning the errpt command.– When a MAP instructs you to replace a FRU, use "FRU Removals and Replacements" in IBM RS/6000

SP: Maintenance Information, Volume 3, Locations and Service Procedures and the specific instructionsfor removing and replacing that part to ensure that the proper procedure is used. Be sure to observedanger, caution, and attention notices.

1-4 RS/6000 SP MAPs


– Features may be installed in this product that are not covered in the following MAPs. Should the fol-lowing diagnostics fail to resolve the field problem, refer to the documentation that came with theinstalled features for further diagnostic information.

– If the control workstation hardware is not operating correctly, refer to the appropriate workstation diag-nostic manual. Otherwise, go to Step 002.

002

– Check for the existence of the high availability control workstation (HACWS) by looking at the framesupervisor card. Verify the twin tail RS/232 cable hook-up needed for HACWS.

Note: The twin tail frame supervisor card is also needed for frames supporting the SP Switch or forframes containing 604 or 604e high node(s).

– Start either Perspectives or the System Monitor:

Perspectives

On the command line of the control workstation, type sphardware and press Enter , to start Per-spectives. Refer to the Perspectives information in IBM RS/6000 SP: Administration Guide,GC23-3897.

System Monitor

Ensure that the system monitor software is active on the control workstation by following the proce-dures below. Refer to the System Monitor information in IBM RS/6000 SP: Administration Guide,GC23-3897.

1. Check for a window labeled “System Monitor”.2. If the window is not found, look for an icon (small box) labeled “disp_in:” or “disp_mgr”; click on

the icon to raise the window.3. If no window appears, click on an active AIX window and enter:

spmon -g

Open the “3 Digit Display ” window by following these procedures:a. From “Display Manager” or “System Monitor” window, click on “SP”.b. From the pulldown menu, click on the “All Node Summary Display” option.c. From the “Available Variables” menu, click on “3-Digit Display”, then click on the “Display All

Node Summary” button.

– Open a TTY window, if possible, to the failing node. Real-time error data can be observed that can helpwith problem determination and repair.

– Check the boot Ethernet and switch communication status by issuing the following command from thecontrol workstation:

SDRGetObjects host_responds (Ethernet)

SDRGetObjects switch_responds (Switch)

A value of "0" for host_responds or switch_responds , for any node, indicates a communicationproblem (this may be the result of some other hardware problem).

– Check for system monitor, node, and switch errors by issuing one or more of the following commandsfrom an AIX window:



Check Statusof:

Issue Commands on: Commands:

SP hardware Control workstation errpt -a -N sphwlog | pg

Affected node Node's TTY console or "tn HOSTNAME" errpt -a | pg

Switch links Primary node's TTY console or "tnHOSTNAME" (use splstdata -s to identifyHOSTNAME)

errpt -a -N Worm | pgpg /var/adm/SPlogs/css/out.top

Dependentnode

Control workstation SDRGetObjects DependentNode

Notes:

1. The most recent entry is found at the top of errpt

2. When viewing the error log using the pg command, the following options may be entered at thecolon (:) prompt:

$ Jumps to end of output (to view oldest entries of errpt+ Jumps one page forward− Jumps one page backward# Jumps to line number # of the file (first line is 1)

3. Refer to "Checking Errors Using “errpt”" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for more information on using the errpt command.

4. Check the date/time stamp of the log entries for updated information. Be aware that conditions mayhave been cleared, as indicated by “Condition cleared” in the message.

5. Note that “node17” or “slot17” refers to a switch assembly in the position below processor nodes 1and 2.

– The following table contains a prioritized list of conditions. Find the first condition that describes yourproblem, then perform the suggested action.

Priority Condition Action

1 Control workstation hardware notoperating correctly.

Go to RS/6000 MAPs to service the control work-station.

2 System monitor (errpt) reports super-visor problem:

� “Frame Controller does notrespond...”

� “Frame supervisor does notrespond”

� “Supervisor bus failed for node...”� “Node supervisor does not

respond”� “Supervisor bus failure”

� Perspectives/spmon notresponding to frame or node

Go to “MAP 0110: Supervisor Subsystem” onpage 1-10.

3 Problem with entire frame:

� System monitor (errpt/nottopology) reports hardwareproblem associated with frame(s).

� Problem with frame power.

Go to “MAP 0370: Main Power” on page 1-222.

1-6 RS/6000 SP MAPs



4 Problem with frame supervisor greenLED number 2 flashing.

Go to “MAP 0430: dc Power Loss from Bulk dcPower Supply(s)” on page 1-250.

5 Processor node LED/LCDs or 8-digitdisplay on TTY window are not blank(OK = blank).

Thin, Wide, or High Node: Go to “MAP 0190:Processor Node Function” on page 1-87.

332 MHz and POWER3 Symmetric MultiProcessor(SMP) Thin or Wide Nodes: Go to “332 MHz SMPand POWER3 SMP Thin and Wide Node Messagesand Codes” in RS/6000 SP: Maintenance Information,Volume 3.

Note: Some nodes may show “standby” or messagein LED/LCD.

6 Problem with processor node:

� TTY console and/or systemmonitor (errpt/not topology)reports a hardware problem forprocessor node(s) (slots 1-16).

� Uniprocessor (Thin/Wide Node)

– Yellow LED on or flashing.

– Green LED off or flashing.

� SMP (Thin/Wide/High Node)

– Supervisor LED #1 flashing(green)

– Supervisor LED #5 flashing(yellow)

� Problem with node power.

Go to “MAP 0130: Processor Node” on page 1-30.

7 Problem with switch assembly orcommunication:

� System monitor (errpt) reports ahardware problem for switchassembly (slot 17).

� Yellow LED on or flashing.� Green LED off or flashing.� switchResponds is "0" for nodes.� switchResponds = YELLOW� Primary node errpt -a -N Worm

lists problems.� Problem identified in out.top file.� Problem with dependent node

connection to switch.

Go to “MAP 0510: Switch Assembly” on page 1-294.

8 Network problem reported by“Topology” window, GUI, or customer.

� Ethernet (en) — hostRespondsnot green

� Switch (css) — switchRespondsnot green

� Token Ring (tr) � FDDI (fi)

Go to “MAP 0490: Network Problem” on page 1-286.

9 Block Multiplexer Channel Adapterproblem detected by customer.

Go to “MAP 0560: Block Multiplexer Channel Adapter(BMCA)” on page 1-353.




10 One of the following problemsdetected by the customer or cus-tomers' EREP program:

� I/O adapter problem (other thanBMCA).

If this is a SPS adapter problemin a 135 MHz wide node at PSSPlevel 2.3 or below, first check toensure that the SPS adapter isplugged into an I/O bus 0 slot(preferably slot 0/4).

� If this is a 332 MHz SMP node,ensure the SPS adapter cable isplugged into port P0.

� Memory and/or processorproblem (for 604e high nodes,ensure that memory DIMMtypes are not mixed on indi-vidual memory cards or on thenode) .

� SCSI/HDISK or other deviceproblems. (For 604 and 604e highnodes, refer to the media drawerdiagram in "Removing the 604 or604e High Node DASD" in IBMRS/6000 SP: Maintenance Infor-mation, Volume 3, Locations andService Procedures showing theSCSI path and power cable.)

1. Check the processor node for any additionalerrors reported. (Look in errpt -a | pg on theaffected node.) If possible, run diag -a to checkfor missing or additional devices. If any SRN islogged, find the equivalent RS/6000 model inTable 1-6 on page 1-33. Then locate the SRNtable in Diagnostic Information for Micro ChannelBus Systems (SA38-0532). or Diagnostic Informa-tion for Multiple Bus Systems (SA38-0509).

2. Have the customer remove the processor nodefrom the active configuration and SHUTDOWN thenode.

3. IPL the processor node in SERVICE mode. Referto "Running Diagnostics in a Processor Node" inIBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures.

4. Run diagnostics against the suspected card. Referto Diagnostic Information for Micro Channel BusSystems (SA38-0532) or Diagnostic Informationfor Multiple Bus Systems (SA38-0509) and theAdapters, Devices and Cable Information(SA38-0533).

Refer to RS/6000 SP: Maintenance Information,Volume 3 for processor node locations andremoval and replacement procedures, or RS/6000SP: Maintenance Information, Volume 4 for partnumbers, as required. (For 604 or 604e highprocessor nodes, consult the 7015 Models R30,R40, and R50 CPU Enclosure Installation andService Guide and 7015 SupplementalInformation.)

Note: When diagnosing problems on 604 or604e high nodes, place IPL in "long IPLboot". (See “MAP 0280: 604 or 604e HighNode Minimum Configuration” onpage 1-145.)

5. If no problem is found and no service was taken,the problem may be in the software or attachedhardware.

6. If parts were just repaired or replaced, go to Step001 on page 1-4.

7. Return processor node to NORMAL mode. Poweroff/on the processor node to IPL.

8. Go to “MAP 0570: End of Call” on page 1-357.

11 Processor node or switch assembly isnot recognized by system monitor:

� Display shows an empty box forthis processor node or switchassembly.

Go to “MAP 0120: Supervisor Bus Problem” onpage 1-19 to service this processor node or switchassembly.

1-8 RS/6000 SP MAPs



12 Processor node problem detected bycustomer or CE:

� 3-digit LEDs displayed butmissing segments or remainblank

� Processor node will not reset� No response from TTY console� Mode switch problem� Yellow or green LEDs on

processor node will not light.

Go to “MAP 0170: Thin Processor Node Control” onpage 1-74, “MAP 0230: Wide Processor NodeControl” on page 1-110, “MAP 0270: 604 or 604eHigh Node Control” on page 1-135, or “MAP 0310:332 MHz SMP Node Control” on page 1-177,depending on the type of processor nodes.

For 604 or 604e high processor nodes, consult the7015 Models R30, R40, and R50 CPU EnclosureInstallation and Service Guide and 7015 SupplementalInformation

For SP-attached servers (RS/6000 Machine Type7017-S70 and S7A), check the server to SP con-nection cables for correct plugging. Refer to "InstallingSP-Attached Server Cables" in RS/6000 SP: Mainte-nance Information, Volume 1. Consult the RS/6000Enterprise Servers S70 and S7A Installation andService Guide to perform the required service action.

Note: Before disconnecting cables or performingservice actions on an SP-attached server,perform "Decoupling and Coupling Code forSP-Attached Servers" in RS/6000 SP: Mainte-nance Information, Volume 3.

13 Dependent node or SP switch routeradapter problem (other than switchconnection) detected by customer.

Service required on 9077 switch router (dependentnode). Use SP Switch Router Adapter Guide, shippedwith the 9077, to continue problem determination.

14 Other problems affecting operation ofthe system.

Call next level of support.


MAP 0110: Supervisor Subsystem

MAP 0110: Supervisor SubsystemThe supervisor subsystem consists of the following components:

� Node supervisor card (one per processor node)� Switch supervisor card (one per switch assembly)� Internal cable (one per thin processor node or switch assembly)� Supervisor bus card (one per thin processor node or switch assembly)� Supervisor harness (two per frame)� Supervisor jumper cables (two per frame—PDU only)� Connector card (PDU only)� Backplane card (PDU only)� Frame supervisor card� Serial cable (RS-232)

� SAMI cable

Table 1-1. 8-LED Frame Supervisor LED Definitions

LED# Color Signifies

8 Yellow Control workstation current communication status (S1-RS232 data terminal ready line):

� Momentarily On: Communication active� Flashing: Problem—cannot communicate with control workstation

7 Yellow Control workstation current communication status (S2-RS232 data terminal ready line):

� Momentarily On: Communication active� Flashing: Problem—cannot communicate with control workstation in a HACWS configura-

tion. In a configuration without HACWS, a flashing LED 7 is normal.� Off: Communication inactive

Note: Be aware that there may be communications to the inactive control workstation

6 Yellow Supervisor bus communication status:

� Flashing: Problem—no communication with processor node(s) or switch assemblies� Off: Communication okay

5 Yellow Not Used

4 Green Connection S1 to primary control workstation

� On: Active � Off: Inactive

3 Green Connection S2 to secondary control workstation

� On: Active � Off: Inactive

2 Green Bulk 48 V dc power status:

� On: All 48 V dc power supplies operating okay� Flashing: 48 V dc power supply problem� Off: No 48 V dc power available

1 Green Supervisor power status:

� On: Supervisor power present� Off: No supervisor power

Refer to Figure 1-2 on page 1-12 and Figure 1-3 on page 1-13 to view the supervisor subsystem for thePDU and SEPBU, respectively.

Table 1-1 and Figure 1-1 on page 1-11 show the twin tail frame supervisor LED definitions.

1-10 RS/6000 SP MAPs


Figure 1-1. 8-LED Frame Supervisor Card LEDs

Note: For LEDs #3 and #4, only one communication S1 or S2 is active, while the other one is inactive.

Table 1-2 shows the frame supervisor LED definitions:

Table 1-2. 4-LED Frame Supervisor LED Definitions

LED# Color Signifies

4 Yellow Supervisor bus communication status:

� Flashing: Problem: No communication with processor node(s) or switch assemblies� Off: Communication okay

3 Yellow Control workstation current communication status:

� On: Communication active (momentary)� Flashing: Problem—cannot communicate with control workstation� Off: Communication inactive

2 Green Bulk 48 V dc power status:

� On: All 48 V dc power supplies operating okay� Flashing: 48 V dc power supply problem� Off: No 48 V dc power available

1 Green Supervisor power status:

� On: Supervisor power present� Off: No supervisor power



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Figure 1-2. RS/6000 SP Supervisor Subsystem Diagram (PDU)



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Figure 1-3. RS/6000 SP Supervisor Subsystem Diagram (SEPBU)

001

– Check hardware monitor log on control workstation for error messages.– The following table contains a prioritized list of conditions. Find the first condition that describes your

problem, then perform the suggested action:



002

Frame supervisor not responding.– Check frame supervisor card LEDs. The frame supervisor card is located on the left-hand side of the

Power Distribution Unit.Are any of these LEDs lit?Yes No

003

– Check LEDs on front of processor node(s) and/or switch assemblies. If none are lit, detach super-visor harness from one processor node or switch assembly, then reinsert to initiate node super-visor self-test.

(Step 003 continues)


1 � “Frame Controller does notrespond”

� “Frame supervisor does notrespond”

� Frame Controller shows red

� spmon/perspectives obviously notresponding

Go to Step 002 on page 1-14.

2 � “nodefail1”

� Frame controller togglesred/green

For SP-attached servers (RS/6000 Machine Type7017-S70 and S7A), check the server to SP con-nection cables for correct plugging. Refer to "InstallingSP-Attached Server Cables" in RS/6000 SP: Mainte-nance Information, Volume 1.

Consult the RS/6000 Enterprise Servers S70 and S7AInstallation and Service Guide to perform the requiredservice action.

Otherwise, go to “MAP 0120: Supervisor BusProblem” on page 1-19.


3 � “Supervisor bus failed for node...”

� “Supervisor not responding forslot”

Note: “nodefail#” indicates aproblem with slot address# (for example, nodefail5indicates a problem withslot address 5).

� “Supervisor bus failure”

� Node supervisor not respondingto commands.

Go to “MAP 0120: Supervisor Bus Problem” onpage 1-19.



003 (continued)Were any LEDs on any processor node or switch assembly lit before or during this step?Yes No

004

No supervisor power 12 V dc available.– Go to “MAP 0370: Main Power” on page 1-222.

005

Frame supervisor card has power problem.

Note: If this frame has a PDU, you will have to remove the cover from the PDU dc section.

– Replace the frame supervisor card (refer to "FRU Removals and Replacements" in IBM RS/6000SP: Maintenance Information, Volume 3, Locations and Service Procedures).

– Check LEDs on frame supervisor card.Are any LEDs lit on frame supervisor card?Yes No

006

Problem with supervisor power 12 V dc.– Go to “MAP 0370: Main Power” on page 1-222.

007

– Go to Step 033 on page 1-18.

008

Is frame supervisor LED #3 (yellow LED) or LED #7 or #8 (when there is a twin-tail frame super-visor card) flashing?Yes No

009

Is frame supervisor LED #2 (green LED) flashing?Yes No

010

– Go to “MAP 0120: Supervisor Bus Problem” on page 1-19.

011

– Go to “MAP 0370: Main Power” on page 1-222.

012

– Check for a serial cable connection problem. The serial cable is connected between the frame super-visor card and the control workstation.




012 (continued)Is the cable connected?Yes No

013

Is the HACWS feature being used?Yes No

014

– Go to Step 020.

015

Is LED #7 or #8 momentarily on?Yes No

016

– Go to Step 020.

017

Is LED #3 or #4 on?Yes No

018

– Go to Step 020.

019

– Change card.– Go to Step 023.

020

– Connect cable.– Perform "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures.Does verification test pass?Yes No

021

– Go to Step 023.

022

– Go to “MAP 0570: End of Call” on page 1-357.

023

– Disconnect serial cable PDU-BH-J09 from frame supervisor card.– Install wrap plug (p/n 6298964) on the frame end of the serial cable.(Step 023 continues)



023 (continued)– Locate the port on the multi-port interface or control workstation connected to this serial cable.– Run the serial port wrap test on this serial port. Refer to the RS/6000 MAPs located in Diagnostic Infor-

mation for Micro Channel Bus Systems (SA38-0532).Did the wrap test pass with this serial cable?Yes No

024

Cable wrap test failed.– Install wrap plug (may be p/n 6298966) on this serial port of the control workstation.– Rerun the serial port wrap test.Did the wrap test pass without this serial cable?Yes No

025

Problem isolated to serial port of control workstation (not RS/6000 SP).– Go to “MAP 0570: End of Call” on page 1-357.

026

– Replace serial cable and repeat cable wrap test.Did wrap test pass with new serial cable?Yes No

027

– Call next level of support.

028

– Connect serial cable to frame.– Perform "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.Does verification test pass?Yes No

029

Problem with frame supervisor card.– Go to Step 031.

030

Problem resolved.– Go to “MAP 0570: End of Call” on page 1-357.

031

Problem with frame supervisor card.

Note: If this frame has a PDU, you will have to remove the cover from the PDU dc section.

– Replace the frame supervisor card (refer to "FRU Removals and Replacements" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations and Service Procedures).




031 (continued)– Perform all tests of "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.Does verification test pass?Yes No

032


033

Problem resolved.– If this frame has a PDU, reinstall cover for PDU dc section.– Go to “MAP 0570: End of Call” on page 1-357.


MAP 0120: Supervisor Bus Problem

MAP 0120: Supervisor Bus Problem001

One or more of the following messages appears in the log:

“Supervisor bus failed for node...”“Supervisor not responding for slot”“Supervisor bus failure”OR “spmon/perspectives obviously not responding”

– The following table contains a prioritized list of conditions. Find the first condition that describes yourproblem, then perform the suggested action:

002

Problem communicating with all node and switch supervisors in frame.– Check frame supervisor serial connection PDU-BH-J09 (located at rear of Power Distribution Unit

section) and frame supervisor card for an obvious problem such as a loose connection or damagedcomponent.

Does everything appear okay?Yes No

003

– Fix connection problem or replace damaged component.(Step 003 continues)


1 � All node and switch supervisors inframe have one of the abovemessages in the log.

� Have “Supervisor bus failure”message.

� LED #4 (top yellow LED) or LED#6 (if a twin-tail frame supervisorcard is being used) is flashing.

� spmon/perspectives obviously notresponding.

Go to Step 002.

2 � Single node or switch has one ofthe above messages in the log.

� Single node or switch has afailure symptom received fromrunning verification tests or super-visor self-test.

� Display shows an empty box (slotposition is not shown/recognized)for this processor node or switchassembly.

� Node supervisor self test fails.


3 Multiple nodes and/or switches haveone of the above messages in the log.




003 (continued)– Perform all tests of "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Infor-

mation, Volume 3, Locations and Service Procedures.Does this verification test pass?Yes No

004

Restart this MAP at Step 001 on page 1-19.

005


006

– Check frame supervisor LED #4 (top yellow LED) or frame supervisor LED #6 (if a twin-tail frame super-visor card is being used).

Is frame supervisor LED #4 or LED #6 (twin-tail) flashing?Yes No

007

Probable defective frame supervisor card, or incorrect supervisor code loaded on card.– Replace frame supervisor card.Is the problem resolved?Yes No

008


009


010

Frame supervisor may be hung.–

Type the following command from the control workstation:

hmcmds -Gv run_post frame#:ð

– Check frame supervisor LED #4 (top yellow LED) or LED #6 (if twin-tail).Is frame supervisor LED #4 or LED #6 (twin-tail) flashing?Yes No

011


012

– Replace frame supervisor card.(Step 012 continues)



012 (continued)– Check frame supervisor LED #4 (top yellow LED) and LED #6 (if twin-tail).Is frame supervisor LED #4 or LED #6 (twin-tail) flashing?Yes No

013


014

– Go to Step 015.

015

Attention: Powering off processor node(s) or switch assemblies in a parallel environment may cause alljobs to flush from the queue and switch initialization to rerun.

Attention: If this frame contains processor node(s), they should be removed from active configurationbefore continuing. If processor node(s) are off, continue; otherwise, ask customers to initiate shutdownprocedure and power-off processor node(s) from the control workstation, or defer maintenance until alljobs are completed.

Attention: If this frame contains switch assemblies, powering off switch assemblies will impact the entireswitch network.

– Check with customer to see if you can power off all the processor node(s) and/or switch assemblies in

this frame at this time.Can you power off all processor node(s) and/or switch assemblies in this frame at this time?Yes No

016

Cannot perform complete isolation at this time.– Replace the frame supervisor card (refer to "FRU Removals and Replacements" in IBM RS/6000

SP: Maintenance Information, Volume 3, Locations and Service Procedures).– Check frame supervisor LED #4 (top yellow LED) or frame supervisor LED #6 (if a twin-tail frame

supervisor card is being used).Is frame supervisor LED #4 or LED #6 (twin-tail) flashing?Yes No

017

– Go to Step 053 on page 1-29 to verify fix.

018

Requires further isolation.– Schedule time with customer to complete service. You can resume service at Step 019 or “MAP

0100: Start of Service Call” on page 1-4.

019




019 (continued)– Put main power switch at the front of the frame in the Off (‘0’) position.Is there a cable connected at both PDU-BH-J7 and PDU-BH-J8?Yes No

020


021

– Use the following table to continue service:

Priority Component Action

1 PDU-BH-P7(if present)

1. Disconnect cable from PDU bulkhead.

2. If frame supervisor LED #4 (top yellow LED) orLED #6 (if twin-tail) stops FLASHING, go to Step022 on page 1-23; otherwise reconnect cable andcontinue at Priority 2.

2 PDU-BH-P8(if present)

1. Disconnect cable from PDU bulkhead.

2. If frame supervisor LED #4 (top yellow LED) orLED #6 (if twin-tail) stops FLASHING, go to Step022 on page 1-23; otherwise, reconnect cable andcontinue at Priority 3.

3 Cable Assembly (PDU Only)

� PDU-FC-P406

� PDU-FC-P408

1. Check PDU-BH-J7 and PDU-BH-J8 (bulkhead)connections to PDU-FC-J406 and J408 (connectorcard).

2. If frame supervisor LED #4 (top yellow LED) orLED #6 (if twin-tail) stops FLASHING, go to Step053 on page 1-29; otherwise, continue at Priority4.

4 Connector card (PDU Only) 1. Replace card.


5 Backplane card (PDU Only) 1. Replace card.


6 SEPBU Chassis(SEPBU Only)

1. Replace chassis.


7 All components replaced. Call next level of support.

022




022 (continued)Problem isolated to one supervisor harness: PDU-BH-J7 or PDU-BH-J8.– Reconnect this supervisor harness at the PDU bulkhead.– Following this supervisor harness, disconnect it from each switch assembly or processor node (each

one individually), until the frame supervisor LED #4 (top yellow LED) or LED #6 (if twin-tail) stopsFLASHING, or cable is disconnected from all processor node(s) and/or switch assemblies.

Does frame supervisor LED #4 (top yellow LED) or LED #6 (if twin-tail) stop FLASHING?Yes No

023

– Note which processor node or switch assembly was disconnected last —this is the suspectunit.

– Reconnect this supervisor harness to any processor node or switch assembly other than thesuspect unit.

Does frame supervisor LED #4 (top yellow LED) or LED #6 (if twin-tail) stop FLASHING?Yes No

024

– Replace this supervisor harness: PDU-BH-P7 or PDU-BH-P8.– Perform "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Informa-

tion, Volume 3, Locations and Service Procedures.Does verification test pass?Yes No

025

– Continue with Priority 3 in table of Step 021 on page 1-22.

026

– Go to Step 041 on page 1-26

027

Problem isolated to the suspect unit noted at the beginning of Step 023.– Go to the second bullet of Step 028.

028

– Note which processor node or switch assembly was disconnected last —this is the suspect unit.– Reconnect supervisor harness to its appropriate processor node(s) and/or switch assemblies, except for

the suspect unit.– Go to Step 035 on page 1-24 to continue service.

029

Communication problem with individual node or switch supervisor(s).


Attention: The processor node(s) or switch assemblies must be removed from active configuration beforecontinuing. If processor node(s) or switch assemblies are off, continue; otherwise, ask customers to initiate



shutdown procedure and power-off unit(s) from the control workstation, or defer maintenance until all jobsare completed.

– Check that processor node or switch is not in use by customer before continuing.– Put circuit breaker(s) at front of processor node or switch assembly in the Off (‘0’) position.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures. You can repeat this test as necessary.– Check slot address indicated by self-test against physical location. In a frame with processor nodes, the

switch assembly is at slot address 17.Does the supervisor card pass self-test, including the correct slot address?Yes No

030

– If this is a 604, 604e, 332 MHz SMP,or POWER3 SMP node supervisor card, check that failureis not base code related (see "Base Code Verification" in IBM RS/6000 SP: Maintenance Informa-tion, Volume 3, Locations and Service Procedures). Otherwise continue.

– Go to Step 033.

031

– Perform all tests of "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures.

Does verification test fail?Yes No

032


033

Attention: This step may interrupt use of another processor node, or switch assembly.


– Perform "Supervisor Bus Swap Procedure" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures, to determine if the problem is in supervisor harness or the unit(processor node or switch assembly).

Does the good unit pass?Yes No

034

– Replace the supervisor harness connected to this processor node or switch assembly.– Go to Step 039 on page 1-26.

035

Problem is in the unit (processor node or switch assembly).



Unit Action

HiPS 2.0 switch assembly Replace switch assembly

Thin nodeWide nodeHiPS 3.0 assemblyHiPS-LC8 assemblySPS assemblySPS-8 assembly

Replace supervisor card inside the processor node orswitch assembly

604 high node604e high node

Replace node supervisor card

332 MHz SMP or POWER3 SMP node Replace node supervisor card.

Note: Prior to replacing the node supervisor card,verify 48 V power cable(s) are plugged in therear panel(s).

Refer to "Procedures for Thin Processor Nodes", "Procedures for Wide Processor Nodes", "Procedures for604 or 604e High Processor Nodes", Procedures for 332 MHz SMP Processor Nodes, or "Procedures forSwitch Assemblies" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Pro-cedures.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures to verify fix.Does this test pass?Yes No

036

Problem is in the unit (processor node or switch assembly).

– Replace the supervisor bus cable inside processor node or switch assembly (refer to "FRURemovals and Replacements" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locationsand Service Procedures).


Unit Replace Reference

Thin nodeWide nodeHiPS 3.0 assemblyHiPS-LC8 assembly

Supervisor bus cable inside theprocessor node or switch assembly

"FRU Removals and Replace-ments" in IBM RS/6000 SP: Main-tenance Information, Volume 3,Locations and Service Procedures

SPS assemblySPS-8 assembly

Inner chassis cable "Removing the Switch InnerChassis Cable (SPS, SPS-8)" inIBM RS/6000 SP: MaintenanceInformation, Volume 3, Locationsand Service Procedures.

604 or 604e high node High node supervisor adapter cable "FRU Removals and Replace-ments" in IBM RS/6000 SP: Main-tenance Information, Volume 3,Locations and Service Procedures

332 MHz SMP or POWER3 SMPnode

Reseat the power supply modules "FRU Removals and Replace-ments" in IBM RS/6000 SP: Main-tenance Information, Volume 3,Locations and Service Procedures



036 (continued)– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures to verify fix.Does this test pass?Yes No

037

– For a 604 or 604e high node, if this is the first time here, replace the blue ribbon I2C cableinside the high node supervisor card assembly, and go back to Step 036 on page 1-25 andperform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures to verify fix. If this is the second time here,replace the supervisor interface card within the high node supervisor card assembly, and goback to Step 036 on page 1-25 and perform "Node/Switch Supervisor Self-Test" to verifyfix. If both parts have been replaced, call next level of support.

– For a 332 MHz SMP or POWER3 SMP node, if this is the first time here, replace thepower mix board, and go back to Step 036 on page 1-25 and perform "Node/Switch Super-visor Self-Test" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations andService Procedures to verify fix. If this is the second time here, replace the tailgate cardand cable, and go back to Step 036 on page 1-25 and perform "Node/Switch SupervisorSelf-Test" to verify fix. If both parts have been replaced, call next level of support.


038

– If this is a 604, 604e, 332 MHz SMP, or POWER3 SMP node, reinstall the old node supervisorcard.

– Go to Step 039.

039

– Perform "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures.

Does verification test pass?Yes No

040


041

Supervisor problem resolved.– Make sure the main power switch at the front of the frame is in the On (‘1’) position.– Put circuit breakers at front of processor node(s) and switch assemblies in the On (‘1’) position.– If a new 604 or 604e high node supervisor card was installed, and the node supervisor code update

was not already performed, then refer to "Updating the Node Supervisor Code" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations and Service Procedures.

Did you just service a switch assembly?Yes No

042




043

– Go to Step 101 on page 1-350, to continue verification.

044

Problem with multiple node and/or switch supervisors, but some communication on supervisor bus.– Determine if indicated slot addresses include an entire set below:

Set A [ 2, 4, 6, 8, 10, 12, 14, 16, 17 ] Left side from back (includes switch or switches)

Set B [ 1, 3, 5, 7, 9, 11, 13, 15 ] Right side from back

Do indicated addresses all come from one set?Yes No

045

Problem with various node and switch supervisors from both Set A and B.– Go to Step 029 on page 1-23 and service each node and/or switch supervisor individually.

046

– Record which set (A or B) has the problem.Attention: Powering off processor node(s) or switch assemblies in a parallel environment may cause alljobs to flush from the queue and switch initialization to rerun.

Attention: If this frame contains processor node(s), they should be removed from active configurationbefore continuing. If processor node(s) are off, continue; otherwise, ask customers to initiate shutdownprocedure and power-off processor node(s) from the control workstation, or defer maintenance until alljobs are completed.

Attention: If this frame contains switch assemblies, powering off switch assemblies will impact the entireswitch network.

– From the control workstation, power off all processor nodes (and/or switches) in this frame using

command hmcmds —G off xx:yy (where xx = the designated frame number and yy = the designatednodes).

– Put the main power switch at front of the frame in the Off (‘0’) position.– Swap supervisor harnesses A and B at Power Distribution Unit connectors PDU-BH-J7 and PDU-BH-J8.

If only one harness is present, move it to the other connector.– Perform "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures.– Check the system monitor log on the control workstation for addresses “not responding.”Did failing nodes or switch move to other Set?Yes No

047

Original Set still failing.– Return supervisor harnesses to original connector locations:

� Set A -> PDU-BH-J7(Step 047 continues)



047 (continued)� Set B -> PDU-BH-J8

– Replace supervisor harness A or B, depending on which Set had original problem (reference Step044 on page 1-27).


048

– Return supervisor harnesses to original connector locations:

� Set A -> PDU-BH-J7� Set B -> PDU-BH-J8

Does this frame have a SEPBU?Yes No

049

Attention: High energy present. Do not touch 48 V dc busbars. Shorting will result in systemoutage.

– Open Power Distribution Unit dc panel to access the connector card. This can be done with frame

power on.– Swap cables at connector card PDU-FC-J406 and PDU-FC-J408.– Perform "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.– Check system monitor log from the control workstation.Did the failing addresses move to other Set?Yes No

050

– Return the cables to original connector locations:

� PDU-BH-J7 to Connector card PDU-FC-J406� PDU-BH-J8 to Connector card PDU-FC-J408

– Replace cable PDU-FC-P406 (Set A) or PDU-FC-P408 (Set B), depending on which Setoriginally failed.


051

– Replace connector card (refer to "FRU Removals and Replacements" in IBM RS/6000 SP: Main-tenance Information, Volume 3, Locations and Service Procedures).


052

Problem isolated to SEPBU power chassis.

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2 or“Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary power to the frame.




052 (continued)– Replace SEPBU power chassis (refer to "FRU Removals and Replacements" in IBM RS/6000 SP:

Maintenance Information, Volume 3, Locations and Service Procedures).– Reconnect ac power to frame.– Go to Step 053 to verify fix.

053

– Perform "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures.

Did this verification test pass?Yes No

054

– Go to “MAP 0120: Supervisor Bus Problem” on page 1-19, or “MAP 0110: SupervisorSubsystem” on page 1-10, as appropriate.

055

Problem resolved.– Put main power switch at front of frame in the On (‘1’) position.– Go to “MAP 0570: End of Call” on page 1-357.


MAP 0130: Processor Node

MAP 0130: Processor NodeThe Uniprocessor thin and wide processor nodes have two LEDs on the front of each node.Uniprocessor wide processor nodes also have a duplicate pair of LEDs at the rear of the node. Theirdefinitions are as follows: Environment (Yellow)

Off No environmental problems detected by node supervisor card.

On Warning of environmental condition out of nominal range. Preventative Maintenance shouldbe scheduled for this node.

Flashing Serious environmental condition detected; power shut off.

Power (Green)

Off No 48 V dc power available at processor node.

Flashing Power available at processor node, but RS/6000 logic is Off.

On Power available at processor node, and RS/6000 logic is On.

The 604 or 604e high node supervisor card LED definitions are shown in the following table and inFigure 1-4 on page 1-31.

Table 1-3. 604 or 604e High Node LED Definitions

LED # Color Signifies

8 Not used

7 Not used

6 Not Used

5 Yellow Environment status

4 Green Key mode (Normal)

3 Green Key mode (Secure)

2 Green Key mode (Service)

1 Green Node power status (same as wide node green LED)

Note: When LED #1 is Off and LED #5 is On, this indicates that base code is active.



Figure 1-4. High Node Supervisor Card LEDs

Note: LEDs 6, 7, and 8 are unused.

The 332 MHz SMP node supervisor card LED definitions are shown in the following table.

Table 1-4. 332 MHz SMP Node LED Definitions


8 Not used

7 Not used

6 Not used

5 Yellow Environment status (On = Problem)

4 Green I/O expansion power (On = Good)

3 Green CPU assembly (On = Good)

2 Green I/O expansion assembly installed (On = Yes)

1 Green Node power status (On = OK)

Front Power LEDs Thin Node Power Status I/O Expansion Power Status

Yellow Off, Green Off No 48 V dc power No 48 V dc power

Yellow On, Green Blinking 48 V dc, but Power Off 48 V dc, but Power Off

Yellow On, Green On 48 V dc, and Power On 48 V dc, and Power On



Figure 1-5. 332 MHz SMP Node Supervisor Card LEDs


The POWER3 SMP node supervisor card LED definitions are shown in the following table.

Table 1-5. POWER3 SMP Node LED Definitions


8 Not used

7 Not used

6 Not used

5 Yellow Environment status (On = Problem)

4 Green I/O expansion power (On = Good)

3 Green CPU assembly (On = Good)

2 Green I/O expansion assembly installed (On = Yes)

1 Green Node power status (On = OK)

Figure 1-6. POWER3 SMP Node Supervisor Card LEDs




The RS/6000 SP processor nodes are functionally equivalent to various RS/6000 systems. Table 1-6 onpage 1-33 shows the SP processor node and its equivalent RS/6000 model. This information can be usedwhen referring to RS/6000 maintenance publications.

Table 1-6. SP Processor Nodes and Their Functionally Equivalent RS/6000 Models

RS/6000 SP Processor Node Equivalent RS/6000 Model

Thin Nodes

62 MHz Thin Node 7012 Model 370


66 MHz Thin Node 2 7012 Model 394

120 MHz Thin Node No equivalent RS/6000 model


Wide Nodes

66 MHz Wide Node 7013 Model 590



High Nodes

604 High Node 7015 Model R40

604e High Node 7015 Model R50

Symmetric MultiProcessor (SMP) Nodes

332 MHz SMP Thin Node 7025 Model H50

SP-Attached Server Enterprise Server Models S70 and S7A

POWER3 SMP Thin Node 7043 Model 260



Thin Processor Node

ComponentsEach thin processor node consists of the following parts:

� RS/6000-based components:

– I/O planar (except in 120 and 160 MHz thin nodes)– CPU card (except in 120 and 160 MHz thin nodes)– CPU planar (only in 120 and 160 MHz thin nodes)

– Memory card(s)– SCSI riser card

– SCSI terminator– Fixed disk drive cable(s)– Integrated Ethernet card– Micro Channel Ethernet card– Fixed disk drive(s)– Optional Micro Channel adapter cards.

� Unique RS/6000 SP components:

– Node supervisor card/power supply– LED display card

– Circuit breaker– Node control harness

– Control cables – Power cables – Fans

– Supervisor bus assembly.

Refer to Figure 1-7 on page 1-40, Figure 1-8 on page 1-41, and Figure 1-9 on page 1-42 forhigh-level views of a 66 MHz thin processor node, 66 MHz thin processor node 2, 120 MHz thinprocessor node, and 160 MHz thin processor node. Refer to "Location Diagrams of the RS/6000SP Components" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and ServiceProcedures for top views of the 66 MHz thin processor node, 66 MHz thin processor node 2, 120MHz thin processor node, and 160 MHz thin processor node.

Feature Codes

2002 Two 66 MHz thin processor nodes

2004 Two 66 MHz thin node 2 processor nodes





Wide Processor Node

ComponentsEach wide processor node consists of the following parts:


– CPU planar – I/O planar – Memory card(s)

– Micro Channel Ethernet card– Fixed disk drive(s)– Optional Micro Channel adapter cards.


– Wide Node supervisor card– Wide Node power card– LED display card


– Control cables – Power cables – Fans

– Fixed disk drive cable(s)

Refer to Figure 1-10 on page 1-43, for a high-level view of a wide processor node and to"Location Diagrams of the RS/6000 SP Components" in IBM RS/6000 SP: Maintenance Informa-tion, Volume 3, Locations and Service Procedures, for a top view of a wide processor node.

Types

2003 One 66 MHz wide processor node

2005 One 77 MHz wide processor node

2007 One 135 MHz wide processor nodes



604 or 604e High Processor Node

ComponentsEach high processor node consists of the following parts:


– System planar– I/O planar (x2)

– Processor card(s) – Memory card(s)

– Micro Channel Ethernet card– Fixed disk drive(s)– Optional Micro Channel adapter cards.

– CPU card– Lateral planar 1 card– Lateral planar 2 card

– IOD – Power supply – Cooling unit – Fans


– High Node supervisor card– High Node power card– LED display card


– Control cables – Power cables

– Fixed disk drive cable(s)

Refer to Figure 1-11 on page 1-44, for a high-level component view of a 604 or 604e highprocessor node and to "Location Diagrams of the RS/6000 SP Components" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations and Service Procedures, for a top view of a 604 or604e high processor node. Refer to 7015 Models R30, R40, and R50 CPU Enclosure Installationand Service Guide and 7015 Supplemental Information for more detailed information on the 604 or604e high node components.

Types

2006 One 112 MHz 604 high processor node

2009 One 200 MHz 604e high processor node



332 MHz SMP Processor Node

ComponentsEach 332 MHz SMP processor node consists of the following parts:


– System planar– I/O planar (x2)– Service processor card

– Memory card(s)– Fixed disk drive(s)– Optional PCI channel cards

– CPU cards – Power supplies – Fans


– 332 MHz SMP Node supervisor card– 332 MHz SMP Node power mix card– MX bus card– Wide node interface card– LED display card– Circuit breaker (power cables)– Node control harness

– Control cables– Fixed disk drive cable(s)

Refer to Figure 1-12 on page 1-45, for a high-level component view of a 332 MHz SMP processornode and to "Location Diagrams of the RS/6000 SP Components" in IBM RS/6000 SP: Mainte-nance Information, Volume 3, Locations and Service Procedures, for a top view of a 332 MHzSMP processor node.

Types

2050 One 332 MHz SMP thin processor node

2051 One 332 MHz SMP wide processor node



SP-Attached Server

ComponentsEach SP-attached server consists of the following parts:

� See RS/6000 Enterprise Servers S70 and S7A Installation and Service Guide, SA38-0548, fora list of RS/6000 components.


– SAMI cable assembly– S1term cable assembly

– Coax cable– 10-meter ground cable– RS/6000 SP system attachment adapter

Refer to RS/6000 Enterprise Servers S70 and S7A Installation and Service Guide, SA38-0548, fora high-level component views of a SP-attached server.

Types

The RS/6000 SP feature codes associated with the SP-attached server (F/C 9122 plus F/C 9123)refer to the system connections that attach the RS/6000 enterprise Server to your RS/6000 SPsystem. F/C 9122 and 9123 do not refer to hardware components. Because the Enterprise Serversare stand-alone devices with cable attachments to the SP system, these servers have some attri-butes that appear node-like to the SP system and other attributes that appear frame-like.

9122 Refers to the node-like attachment between the SP-attached server and the SP system

9123 Refers to the frame-like attachment between the SP-attached server and the SPsystem.



POWER3 SMP Thin and Wide Processor Node

ComponentsEach POWER3 SMP thin and wide processor node consists of the following parts:


– System planar– I/O planar (x2)

– Memory card(s)– Fixed disk drive(s)– Optional PCI channel cards

– CPU cards – Power supplies – Fans


– Node supervisor card– Node power mix card– MX bus card– Wide node interface card– LED display card– Circuit breaker (power cables)– Node control harness

– Control cables– Fixed disk drive cable(s)

Refer to Figure 1-13 on page 1-46, for a high-level component view of a POWER3 SMP thin andwide processor node and to "Location Diagrams of the RS/6000 SP Components" in IBM RS/6000SP: Maintenance Information, Volume 3, Locations and Service Procedures, for a top view of aPOWER3 SMP thin and wide processor node.

Types

2052 One POWER3 SMP thin processor node

2053 One POWER3 SMP wide processor node



Figure 1-7. Thin Node High Level Diagram



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Bus

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J101

J101

J111

J103

J203

J204

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ower

+12

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+5

+12

-12

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J104

J102

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J107

Fan

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an 2

Fan

1

Figure 1-8. Thin Node 2 High Level Diagram



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sor

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Car

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Figure 1-9. 120 and 160 MHz Thin Node High Level Diagram



Fan

1F

an 2

Fan

3F

an 4

Fan

5

J102

J101

+12

VJ7

Sup

ervi

sor

Bus

JS39

J39

JS37

J37

J41

J40

J13

J14

J16

J36

J36

J38

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J40A

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Figure 1-10. Wide Node High Level Diagram



Figure 1-11. 604 or 604e High Node High Level Component Diagram



Figure 1-12. 332 MHz SMP Node High Level Component Diagram



Figure 1-13. POWER3 SMP Thin and Wide Node High Level Component Diagram

001

Error reported in system monitor log or visual indication of a problem in processor node.Read these warnings and then follow steps to ensure continuity of customer’s jobs in the queue:

Attention: The processor node(s) must be removed from active configuration before continuing. Ifprocessor node(s) is/are off, continue; otherwise, ask customers to initiate shutdown procedure andpower-off processor node(s) from the control workstation, or defer maintenance until all jobs are com-pleted. Powering off a processor node(s) in a parallel environment will cause all jobs to flush from thequeue and switch initialization to rerun.

Attention: Servicing a processor node with the High Performance Switch (HiPS) feature or ScalablePOWERparallel Switch (SPS) feature installed, will impact the entire switch network, unless the processornode has already been powered off (or fenced) and/or the switch data cable has been disconnected.

– Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures for placing or removing processor node(s) in/from service position.– Refer to "Viewing Switch Partitions" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations

and Service Procedures for locating and fencing/unfencing nodes within a switch partition.– From the control workstation, check the hardware monitor log for indication of problem.– The following table contains a prioritized list of conditions. Find the first condition that describes your

problem, then perform the associated action:



Priority Message or condition Action

1 Environmental problems

� Errpt: “Failure...”� Log: “Shutdown: Voltage...”� Log: “Shutdown: Fan...”� Log: “Shutdown: Temperature...”� Log: “Shutdown: Memory protect

fault” � Errpt: “Warning...” � Log: “Warning:...” � (Environment)

– Uniprocessor (Thin/WideNode)

- Yellow LED on or flashing

– SMP (Thin/Wide/High Node)

- LED #5 (yellow) on orflashing

� “rc.powerfail” from TTY� Node's errpt -a | pg shows “Loss

of Electric Power”

Go to the applicable MAP:

� “MAP 0140: Thin Node/Thin Node 2Environment” on page 1-50

� “MAP 0150: 120/160 MHz Thin NodeEnvironment” on page 1-60

� “MAP 0210: Wide Processor Node Environment”on page 1-98

� “MAP 0250: 604 or 604e High NodeEnvironment” on page 1-124

� “MAP 0290: 332 MHz SMP Node Environment”on page 1-160

� SP-attached servers (RS/6000 Machine Type7017-S70 and S7A): Consult the RS/6000 Enter-prise Servers S70 and S7A Installation andService Guide.

Note: Before disconnecting cables or performingservice actions on an SP-attached server,perform "Decoupling and Coupling Codefor SP-Attached Servers" in RS/6000 SP:Maintenance Information, Volume 3.

� “MAP 0330: POWER3 SMP Thin and Wide NodeEnvironment” on page 1-191

to perform the required service action.




2 Power problem

� Uniprocessor (Thin/Wide Node)

– Green LED off or flashing

� SMP (Thin/Wide/High Node)

– LED #1 (green) off or flashing

� (Power) Green LED off or flashing� Node has no power� All voltages at zero

Perform "Node/Switch Supervisor Self-Test" in IBMRS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures to verify operationof LEDs.

� If supervisor test fails, go to “MAP 0120: Super-visor Bus Problem” on page 1-19.

� If test passes, go to the applicable MAP:

– “MAP 0160: Thin Processor Node Power” onpage 1-69

– “MAP 0220: Wide Processor Node Power” onpage 1-105

– “MAP 0260: 604 or 604e High Node Power”on page 1-130

– “MAP 0300: 332 MHz SMP Node Power” onpage 1-169

– SP-attached servers (RS/6000 MachineType 7017-S70 and S7A): Consult theRS/6000 Enterprise Servers S70 and S7AInstallation and Service Guide.

Note: Before disconnecting cables or per-forming service actions on anSP-attached server, perform "Decou-pling and Coupling Code forSP-Attached Servers" in RS/6000 SP:Maintenance Information, Volume 3.

– “MAP 0340: POWER3 SMP Thin and WideNode Power” on page 1-200


3 Power problem — SP-attachedservers (RS/6000 Machine Type7017-S70 and S7A)

� Check the server to SP connection cables forcorrect plugging. Refer to "Installing SP-AttachedServer Cables " in RS/6000 SP: MaintenanceInformation, Volume 1. Consult the RS/6000Enterprise Servers S70 and S7A Installation andService Guide to perform any required serviceaction.


� Go to “MAP 0190: Processor Node Function” onpage 1-87.

4 Processor problem

� Front panel 3-digit LEDs non-blank (OK=blank)

Go to “MAP 0190: Processor Node Function” onpage 1-87.




5 Control problem

� Node will not reset

� Mode switch problem—problemsetting NORMAL, SECURE, orSERVICE mode.

� No response from TTY consoleonly

� 3-digit LEDs missing segments orremain blank

Go to the applicable MAP:

� “MAP 0170: Thin Processor Node Control” onpage 1-74

� “MAP 0230: Wide Processor Node Control” onpage 1-110

� “MAP 0270: 604 or 604e High Node Control” onpage 1-135

� “MAP 0310: 332 MHz SMP Node Control” onpage 1-177

� SP-attached servers (RS/6000 Machine Type7017-S70 and S7A): Check the server to SP con-nection cables for correct plugging. Refer to"Installing SP-Attached Server Cables " inRS/6000 SP: Maintenance Information, Volume 1.

Consult the RS/6000 Enterprise Servers S70 andS7A Installation and Service Guide to perform anyrequired service action.


� “MAP 0350: POWER3 SMP Thin and Wide NodeControl” on page 1-208



MAP 0140: Thin Node/Thin Node 2 Environment

MAP 0140: Thin Node/Thin Node 2 EnvironmentNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures for placing or removing processor node(s) in/from service posi-tion.

001

System monitor reports “Warning”, “Shutdown”, or “Failure” message associated with processor node.Does message indicate “Shutdown” or “Failure”?Yes No

002

Message is a warning only.– Refer to the node environment display frame.Does this same message occur on more than one processor node?Yes No

003

No immediate service required.– Preventative maintenance can be done now by returning to Step 001. and treating the

message as a “Shutdown” or “Failure” message, or service can be deferred until a laterdate.

004

– Notify next level of support.

005

A serious environmental condition has been detected in the processor node.

Note: If service action has just been completed on this processor node, check for loose cables or shortedconditions in the processor node.

– Refer to the node environment, node detail, and node diagnostic display frames.– Based on the text of the message, use the following table to continue service:

Condition Action

“...P48 OK...” Go to “MAP 0160: Thin Processor Node Power” onpage 1-69.

“...shutdownP4...”“...shutdownP5...”“...shutdownP12...”“...shutdownN12...”


“...fanfail...” Go to Step 017 on page 1-52.

“...shutdownTemp...” Go to Step 021 on page 1-53.

“...memoryProtect...” Go to Step 032 on page 1-55.

006




006 (continued)One or more of the following conditions exist:

Voltage out of range: +4 V “shutdownP4”Voltage out of range: +5 V “shutdownP5”Voltage out of range: +12 V “shutdownP12”Voltage out of range: −12 V “shutdownN12”CPU card power problem: +4 VPlanar power problem: +5 V, +12 V, or −12 V

– Place processor node in service position.– Check planar power cable connections at node supervisor card N00-NS-J102 and I/O planar N00-PL-J2.

Also check condition of cable wires.– If this is a problem involving a +4 V supply, check cable connections at node supervisor card

N00-NS-J204 and CPU card N00-PR-P3. Also check condition of cable wires. Check daughter cardconnections from N00-NS-J103 to N00-DP-J203.

Do power cable(s) appear to be okay?Yes No

007

– Fix power cable problem. Replace cable if necessary.– Go to Step 018 on page 1-53

008

Is this a +5 V, +12 V, -12 V, or planar power problem?Yes No

009


010

– Disconnect planar power cable N00-NS-P102 from node supervisor card inside processor node.– Using a digital multimeter, measure resistance between the appropriate pins on cable N00-NS-P102.

Pay attention to which leads to use when measuring resistance. Compare results with the values in thistable.

– Do not reconnect the planar power cable at this time.

VoltageMeasure From (positivelead) To GND (negative lead) Acceptable Range

+5 V Pin 1 (red) (see note) Pin 2 (black) 5 - 35 Ohms

+12 V Pin 3 (yellow) (see note) Pin 2 (black) 500 - 9000 Ohms

−12 V Pin 9 (purple) (see note) Pin 2 (black) 500 - 1200 Ohms

Note: Pins 1, 3, and 9 are black in the 120 and 160 MHz thin processor node.

Is the measured resistance in acceptable range?Yes No

011




011 (continued)– Remove cable at I/O planar N00-PL-J2, then check resistance on connector N00-PL-J2 using the

same pins.Is resistance the same as in Step 010 on page 1-51?Yes No

012

– Replace planar power cable N00-NS-P102.– Go to Step 018 on page 1-53

013

Problem in RS/6000 power distribution.– Reconnect planar cable at N00-NS-P102 only.– Go to “MAP 0180: Thin Processor Node dc Short/Open” on page 1-84.

014

Problem in node supervisor card.– Replace node supervisor card.Is there a +4 V dc problem?Yes No

015

– Go to Step 017.

016


017

– One or more of the following conditions exist:

� Warning Fan: “fanwarning1”, “fanwarning2”, “fanwarning3”

� Shutdown Fan: “fanfail1”, “fanfail2”, ..., “fanfail3”

– Place processor node in service position (see "Service Position Procedures" in IBM RS/6000 SP: Main-tenance Information, Volume 3, Locations and Service Procedures for placing or removing processornode(s) in/from service position).

– Use the following table to reseat or replace components:



018

Component replaced or reseated.– Make sure that all cables and components are connected inside the processor node.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breaker at the front of processor node in the On (‘1’) position.– Check the Environmental (yellow) LED for an ON or FLASHING condition.Is the Environmental (yellow) LED ON or FLASHING?Yes No

019


020

– Put circuit breaker at the front of the processor node in the Off (‘0’) position.– Go to Step 017 on page 1-52 to service next highest priority component.

021


1 Fan 1, 2, or 3 1. Check specified fan for blockage or loose cableconnection.

2. Fix any obvious problem(s). If none are found,continue at Priority 2.

3. Continue at Step 018 on page 1-53.

2 Fan 1, 2, or 3 1. Replace fan as described in "FRU Removals andReplacements" in IBM RS/6000 SP: MaintenanceInformation, Volume 3, Locations and Service Pro-cedures.


3 Node supervisor card 1. Replace card.


4 Node supervisor control cable 1. Replace cable. Refer to Figure 1-14 onpage 1-54, for cable connections.


5 All replaced Call next level of support.



Figure 1-14. Thin Node Supervisor Control Cable

– Over temperature condition: “shutdownTemp”

� Temperature is out of specified range; however, no serious electrical current or fan speed problemshave been detected.

– Check for airflow blockage at air intakes and exhaust of the processor node and system frame. Also,check air temperature around the frame, looking for sources of abnormally high temperatures (above40°C or 104°F).

Is there an obvious airflow blockage or abnormally high temperature source near air intakes?Yes No

022

Problem in node supervisor card.– Place processor node in service position.– Replace node supervisor card.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.Does card pass self-test?Yes No

023


024




024 (continued)Node supervisor card is okay.– Put circuit breaker at the front of the processor node in the On (‘1’) position.– Check Environmental (yellow) LED for ON or FLASHING condition.Is Environmental (yellow) LED ON or FLASHING?Yes No

025

Problem resolved.– Remove processor node from service position.– Go to “MAP 0570: End of Call” on page 1-357.

026

– Check cable connections to node supervisor card.Are there any obvious problems such as a loose or broken cable?Yes No

027


028

– Fix obvious problem.– Go to Step 024.

029

– Place processor node in service position.– Power off the processor node, and remove blockage.– Reconnect all cables at rear of the processor node.– With Environmental (yellow) LED Off, power on the processor node.Does the processor node IPL?Yes No

030

Processor has problem with IPL.– Go to “MAP 0130: Processor Node” on page 1-30.

031


032

Memory protection error: “memoryProtect”

This fault is normally generated only when invalid memory cards are installed in the processor node.




032 (continued)Have memory parts been changed recently (since last successful IPL) in this processor node?Yes No

033

– Problem may be one of the following:

� Base memory card � CPU card � I/O planar� Node supervisor control cable.

– Replace parts, one at a time, until problem is corrected.Are you able to correct the problem?Yes No

034


035


036

– Check memory card and SIMM part numbers in Diagnostic Information for Micro Channel Bus Systems(SA38-0532) and Adapters, Devices and Cable Information (SA38-0533) to ensure that they are com-patible with the fastest Type 7012 machines.

– If necessary, call next level of support.

037

Problem with +4 V dc for CPU card power.– Disconnect CPU power cable N00-DP-J204 at +4 V daughter power card.– Using a digital multimeter, measure resistance between pin 1 and pin 5 on cable N00-DP-P204.

VoltageMeasure from (positivelead) To GND (negative lead) Acceptable Range

+4 V Pin 1 (red) Pin 5 (black) 4.0 - 100 Ohms


038

– Remove CPU card from processor node, then repeat measurement from Step 037.Is the measured resistance in acceptable range?Yes No

039




039 (continued)– Disconnect CPU power cable at CPU card N00-PR-P3, then measure resistance between

pin 1 and pin 5 on CPU card N00-PR-P3.Is the resistance the same as in Step 038 on page 1-56?Yes No

040

– Replace CPU power cable N00-PR-P3.– Go to Step 054 on page 1-58.

041

Problem on CPU card.– If the resistance was above the acceptable range, check for component damage due to a

short condition.– Check for any obvious problems on CPU card (such as missing or loose components,

damaged components, etc).Is there an obvious problem on the CPU card?Yes No

042

– Replace base CPU card, transferring all cache and memory SIMMs from the originalCPU card to the new one.


043

– Fix obvious problem. As required, replace parts suspected of causing problem.– Go to Step 038 on page 1-56.

044

Problem may be related to I/O planar and/or memory card.– Check for any obvious problems on CPU card connector to I/O planar (such as loose con-

nections, poor contacts, etc).Are there any obvious problems?Yes No

045

– Remove memory card from processor node, then reinstall CPU card.– Repeat measurement from Step 037 on page 1-56.Is the measured resistance in acceptable range?Yes No

046

Problem in either CPU card or I/O planar.– Replace CPU card.– Repeat measurement from Step 037 on page 1-56.– If resistance if still out of range, replace the I/O planar.– Go to Step 054 on page 1-58.

047



– Check memory SIMMs for obvious problems. Replace any suspect memory SIMM(s).– Replace base memory card, transferring all good memory SIMMs from the original card to

the new one.– Go to Step 054.

048

– Fix obvious problem. As required, replace any damaged parts.– Go to Step 054.

049

Probable problem with node supervisor or +4 V daughter card.– Check for an obvious problem with jumper card between +4 V daughter card N00-DP-J203 and node

supervisor card N00-NS-J103 (such as a loose connection).Is there an obvious problem?Yes No

050

– Replace +4 V daughter card.– If suspected of a problem, replace the jumper card.– Restore processor node, by performing steps in Step 054, then return to this step to continue.Is the environmental (yellow) LED ON or FLASHING?Yes No

051


052

– Replace node supervisor card.– Go to Step 054.

053

– Fix obvious problem. As required, replace damaged components.– Go to Step 054.

054

Component replaced or reseated.– Make sure all cables and components are connected inside processor node.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breaker at the front of the processor node in the On (‘1’) position.– Check the environmental (yellow) LED for an ON or FLASHING condition.(Step 054 continues)



054 (continued)Is the environmental (yellow) LED ON or FLASHING?Yes No

055


056

Problem not resolved.– Go to Step 037 on page 1-56.


MAP 0150: 120/160 Thin Node Environment

MAP 0150: 120/160 MHz Thin Node EnvironmentNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

System monitor reports “Warning”, “Shutdown”, or “Failure” message associated with processor node.Does message indicate “Shutdown” or “Failure”?Yes No

002

Message is a warning only.– Refer to the node environment display frame.Does this same message occur on more than one processor node?Yes No

003

No immediate service required.– Preventative maintenance can be done now by returning to Step 001 and treating the


004


005



– Refer to the node environment, node detail, and node diagnostic display frames.– Based on the text of the message, use the following table to continue service:

Condition Action

“...P48 OK...” Go to “MAP 0160: Thin Processor Node Power” onpage 1-69.

“...shutdownP2_5d...”“...shutdownP4d...”“...shutdownP5...”“...shutdownP12...”“...shutdownN12...”







006


� Voltage out of range: +2.5 V “shutdownP2_5”� Voltage out of range: +4 V “shutdownP4”� Voltage out of range: +5 V “shutdownP5”� Voltage out of range: +12 V “shutdownP12”� Voltage out of range: −12 V “shutdownN12”� CPU card power problem: +2.5 V� Planar power problem: +5 V, +12 V, or −12 V

– Place processor node in service position.– Check planar power cable connections at node supervisor card N00-NS-J102 and I/O planar N00-PL-J2.

Also check condition of cable wires.– If this is a problem involving a +4 V supply, check cable connections at node daughter card

N00-DP-J204 and planar card N00-PL-P3. Also check condition of cable wires. Check daughter cardconnections from N00-NS-J103 to N00-DP-J203.

Do power cable(s) appear to be okay?Yes No

007

– Fix power cable problem. Replace cable if necessary.– Go to Step 018 on page 1-63

008

Is this a +5 V, +12 V, -12 V, or planar power problem?Yes No

009


010

– Disconnect planar power cable N00-NS-P102 from node supervisor card inside processor node.– Using a digital multimeter, measure resistance between the appropriate pins on cable N00-NS-P102.

Pay attention to which leads to use when measuring resistance. Compare results with the values in thistable.

– Do not reconnect the planar power cable at this time.

VoltageMeasure From(positive lead)

To GND(negative lead) Acceptable Range

+5 V Pin 1 (black) Pin 2 (black) 5 - 35 Ohms

+12 V Pin 3 (black) Pin 2 (black) 500 - 9000 Ohms

−12 V Pin 9 (black) Pin 2 (black) 500 - 1200 Ohms




010 (continued)Is the measured resistance in acceptable range?Yes No

011

– Remove cable at I/O planar N00-PL-J2, then check resistance on connector N00-PL-J2 using thesame pins.

Is resistance the same as in Step 010 on page 1-61?Yes No

012

– Replace planar power cable N00-NS-P102.– Go to Step 018 on page 1-63

013

Problem in RS/6000 power distribution.– Reconnect planar cable at N00-NS-P102 only.– Go to “MAP 0180: Thin Processor Node dc Short/Open” on page 1-84.

014

Problem in node supervisor card.– Replace node supervisor card.Is there a +4 V dc problem?Yes No

015

– Go to Step 017.

016


017


� Warning Fan: “fanwarning1”, “fanwarning2”, “fanwarning3”, “fanwarning4”

� Shutdown Fan: “fanfail1”, “fanfail2”, “fanfail3”, “fanfail4”

– Place processor node in service position.– Use the following table to reseat or replace components:




1 Fan 1, 2, 3, or 4 1. Check specified fan for blockage or loose cableconnection.



2 Fan 1, 2, 3, or 4 1. Replace fan as described in "FRU Removals andReplacements" in IBM RS/6000 SP: MaintenanceInformation, Volume 3, Locations and Service Pro-cedures.







P2SC Thin Node Supervisor Control Cable

F1 (Fan1)1x3

PL-P211x2

F4 (Fan4)1x3

F3 (Fan3)2x2

PL-P22I/O Planar

LD (LED Card)1x4

NS-P107(Node SV Card)

2x25

F2 (Fan2)2x2

PL-PL25 (I/O Planar)1x4

Figure 1-15. 120 or 160 MHz Thin Node Supervisor Control Cable

018




018 (continued)Component replaced or reseated.– Make sure that all cables and components are connected inside the processor node.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breaker at the front of processor node in the On (‘1’) position.– Check the Environmental (yellow) LED for an ON or FLASHING condition.Is the Environmental (yellow) LED ON or FLASHING?Yes No

019


020

– Put circuit breaker at the front of the processor node in the Off (‘0’) position.– Go to Step 017 on page 1-62 to service the next highest priority component.

021

Over temperature condition: “shutdownTemp”

Temperature is out of specified range; however, no serious electrical current or fan speed problems havebeen detected.



022



023


024

Node supervisor card is okay.– Put circuit breaker at the front of the processor node in the On (‘1’) position.– Check Environmental (yellow) LED for ON or FLASHING condition.(Step 024 continues)



024 (continued)Is Environmental (yellow) LED ON or FLASHING?Yes No

025


026


027


028

– Fix obvious problem.– Go to Step 024 on page 1-64.

029

– Place processor node in service position.– Power off the processor node, and remove blockage.– Reconnect all cables at rear of the processor node.– With Environmental (yellow) LED Off, power on the processor node.Does the processor node IPL?Yes No

030


031


032



Have memory parts been changed recently (since last successful IPL) in this processor node?Yes No

033




033 (continued)Problem may be one of the following:

Base memory cardI/O planarNode supervisor control cable.

– Replace parts, one at a time, until problem is corrected.Are you able to correct the problem?Yes No

034


035


036



037

Problem with dc voltage for I/O planar.– Disconnect power cable N00-DP-J204 at daughter power card.– Using a digital multimeter, measure resistance between pin 1 and pin 5 on cable N00-DP-P204.

VoltageMeasure from(positive lead)


+2.5 V Pin 1 (black) Pin 5 (black) 4.0 - 100 Ohms

+4 V Pin 1 (red) Pin 5 (black) 4.0 - 100 Ohms


038

– Remove the memory card(s) from processor node, then repeat measurement from Step 037.Is the measured resistance in acceptable range?Yes No

039

– Disconnect power cable at I/O planar N00-PL-P3, then measure resistance between pin 1and pin 5 on N00-PL-P3.




039 (continued)Is the resistance the same as in Step 038 on page 1-66?Yes No

040

– Replace power cable N00-PR-P3.– Go to Step 052 on page 1-68.

041

Problem on I/O planar.– Replace I/O planar, transferring all memory cards from the original I/O planar to the new

one.– Go to Step 025 on page 1-65.

042

Problem with memory card(s).– Install a memory card in processor node.– Repeat measurement from Step 037 on page 1-66.Is the measured resistance in acceptable range?Yes No

043

Problem in either memory card.– Check memory SIMMs for obvious problems. Replace any suspect memory SIMM(s).– Replace base memory card, transferring all good memory SIMMs from the original card to

the new one.– Repeat measurement from Step 037 on page 1-66.Is the measured resistance in acceptable range?Yes No

044

– Replace I/O planar.– Go to Step 052 on page 1-68.

045


046

– Install second memory card (if applicable).– Go to Step 052 on page 1-68.

047

Possible problem with node supervisor or daughter card.– Check for an obvious problem with jumper card between daughter card N00-DP-J203 and node super-

visor card N00-NS-J103 (such as a loose connection).(Step 047 continues)



047 (continued)Is there an obvious problem?Yes No

048

– Replace daughter card.– If suspected of a problem, replace the jumper card.– Restore processor node, by performing steps in Step 052, then return to this step to continue.Is the environmental (yellow) LED ON or FLASHING?Yes No

049


050

– Replace node supervisor card.– Go to Step 052.

051

– Fix obvious problem. As required, replace damaged components.– Go to Step 052.

052

Component replaced or reseated.– Make sure all cables and components are connected inside processor node.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breaker at the front of the processor node in the On (‘1’) position.– Check the environmental (yellow) LED for an ON or FLASHING condition.Is the environmental (yellow) LED ON or FLASHING?Yes No

053


054



MAP 0160: Thin Processor Node Power

MAP 0160: Thin Processor Node PowerNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

– From the system monitor, check the Power (green) LED for this processor node.The definition of the Power (green) LED is as follows: Power (Green)




Is Power (green) LED Off?Yes No

002

Processor node getting 48 V dc power.Is Power (green) LED flashing?Yes No

003

Power (green) LED is On, indicating no problem with power supply.– Verify that you have the proper processor node, then go to “MAP 0130: Processor Node”

on page 1-30.– If this is the proper processor node, call the next level of support.

004

Processor node is getting power.– Power on RS/6000 logic from the virtual front panel on the control workstation.Does Power (green) LED light and stay lit?Yes No

005

Node not responding to the command.– Go to “MAP 0110: Supervisor Subsystem” on page 1-10.

006

RS/6000 logic getting power.Does processor node IPL successfully?Yes No

007

Processor node has problem with IPL.– Go to “MAP 0130: Processor Node” on page 1-30.



008

No problem detected.– Go to “MAP 0570: End of Call” on page 1-357.

009

Possible problem with node power harness or node supervisor card.– Go to Step 010

010

– Check circuit breaker at front of processor node. Put circuit breaker in the On (‘1’) position if it is notalready.

Does the circuit breaker stay in the On (‘1’) position?Yes No

011

– Place processor node in service position.– Check node power harness inside processor node for any obvious problems which might cause a

short.Is there an obvious problem which might cause a short?Yes No

012

– Replace the node supervisor card.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Reinstall processor node in the frame and connect power and supervisor cables at rear of

processor node.– Go to Step 010.

013

– Fix obvious problem(s). If necessary, replace node power harness, N00-NS-J110.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Reinstall processor node in the frame and connect power and supervisor cables at rear of

processor node.– Go to Step 010.

014

Possible problem with 48 V dc harness.– Go to Step 015

015

– From control workstation or processor node, check Power (green) LED for this node.(Step 015 continues)



015 (continued)Is Power (green) LED Off?Yes No

016

Processor node problem resolved.– Go to “MAP 0570: End of Call” on page 1-357.

017

– Check processor node(s) on any other dc power harness for any that are powered on. Ensure that theother processor has its circuit breaker in the On (‘1’) position.

– Check the Power (green) LED for an On or Flashing condition.– Processor nodes receive 48-volt power through one of four power harnesses. The sets of processor

nodes are as follows:

PDU-BH-P1: Processor nodes 1, 2, 3, 4PDU-BH-P2: Processor nodes 5, 6, 7, 8PDU-BH-P3: Processor nodes 9, 1ð, 11, 12PDU-BH-P4: Processor nodes 13, 14, 15, 16

Is the Power (green) LED on other processor(s) nodes On or Flashing?Yes No

018


019

– Check all other processor nodes on the same dc power harness as the failing processor node to checkfor the same symptom - circuit breaker on but Power (green) LED not lit.

Is this the only processor node showing this symptom?Yes No

020

Problem with 48 V dc power distribution.– Go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283

021

– Check cable connection at processor node tailgate N00-BH-J8 for a good connection.Is there a good connection?Yes No

022

– Fix cable connection problem.– Go to Step 015 on page 1-70.

023

– Place processor node in service position.– Put circuit breaker at front of processor node in the On (‘1’) position– Unplug 48 V dc harness N00-NS-P110 from node supervisor card.(Step 023 continues)



023 (continued)– Using a digital multimeter, check for continuity from node tailgate N00-BH-J8 pin 1 to plug N00-NS-P110

pin 1. Check for continuity from node tailgate N00-BH-J8 pin 5 to plug N00-NS-J110 pin 2.Is there continuity?Yes No

024

– Check continuity between two tabs of processor node circuit breaker.Is there continuity?Yes No

025

Problem with circuit breaker.– Replace processor node circuit breaker.– Replug N00-NS-P110 at node supervisor card.– Go to Step 031 to verify fix.

026

– Go to Step 029 to replace node power harness.

027

Possible problem with node supervisor card or node power harness inside processor node.– Go to Step 028

028

– Using a digital multimeter, check for continuity between tailgate N00-NS-J110 pin 1 and pin 2.Does the multimeter indicate an open condition?Yes No

029

Problem with node power harness inside processor node.– Replace the node power harness N00-NS-P110 inside this processor node.– Reinstall processor node in frame.– Go to Step 031 to verify fix.

030

– Replace the node supervisor card, taking care to replug all cables, including node power harnessN00-NS-P110.

– Go to Step 031 to verify fix.

031

– Remove processor node from service position.– Reconnect all cables at rear of processor node.– Put circuit breaker at front of processor node in the On (‘1’) position.– Check Power (green) LED for an OFF position.(Step 031 continues)



031 (continued)Is the Power (green) LED OFF?Yes No

032


033

Problem with the 48 V dc power distribution to this processor node.– Go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283.


MAP 0170: Thin Processor Node Control

MAP 0170: Thin Processor Node ControlAttention: The processor node(s) must be removed from active configuration before continuing. Ifprocessor node(s) is/are off, continue; otherwise, ask customers to initiate shutdown procedure andpower-off processor node(s) from the control workstation, or defer maintenance until all jobs are com-pleted. Powering off a processor node(s) in a parallel environment will cause all jobs to flush from thequeue and switch initialization to rerun.


Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locationsand Service Procedures for placing or removing processor node(s) in/from service position.

Refer to "Viewing Switch Partitions" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locationsand Service Procedures for locating and fencing/unfencing nodes within a switch partition.

001

Processor node problem detected by customer or CE.– Use the following table to continue service:

Condition Action

� 3-digit LEDs are displayed but missing segmentsor remain blank



� Mode switch problem—problem setting NORMAL,SECURE, or SERVICE mode.

Go to Step 002.

� No response from TTY console Go to Step 026 on page 1-78.

� Yellow or green LEDs on node will not light. Go to Step 042 on page 1-82.

002

Node will not reset or mode switch problem.– Check with customer to make sure this processor node is not in the current active configuration. If

processor node is not operational and actively working at this time, continue service. If it is operationaland actively working, schedule a time convenient for the customer.

– From the control workstation, open the node front panel display.– Make note of the mode switch position for this processor node—NORMAL, SECURE, or SERVICE.– Set mode switch to something other than that recorded above.– If not already there, set the mode switch to SERVICE.

Note: Do NOT recycle node power until reset fault is verified

.Does the mode switch fail to toggle?Yes No

003

Problem not related to mode switch.(Step 003 continues)



003 (continued)Was mode originally in SERVICE position as noted in previous step?Yes No

004

Customer may have tried to reset processor node in SECURE mode. Reset will only takeeffect in NORMAL or SERVICE modes.– From the control workstation, reset this processor node.Does processor node reset?Yes No

005

Problem with reset.– Go to Step 012 on page 1-76.

006

No problem found.– Inform customer that the processor node will not reset if the mode switch is in the SECURE

position.– Go to “MAP 0570: End of Call” on page 1-357.

007

– From the control workstation, issue reset for this processor node.Does processor node reset?Yes No

008


009

Intermittent problem may be occurring.– Please record following:

� Node number� Date / Time fault reported� Type of fault reported

– Check logs to see if this fault has been previously recorded.Is this a recurring fault?Yes No

010

This is not a recurring fault.– Go to “MAP 0570: End of Call” on page 1-357.

011

Reoccurrence of intermittent fault has been detected.(Step 011 continues)



011 (continued)– Treat this fault as a solid failure.– Go to Step 024 on page 1-77.

012

– From the control workstation node front panel display:

� Power-off processor node.� Power-on processor node.� Check 3-digit LEDs for LED sequence indicating IPL.

Do the 3-digit LEDs change?Yes No

013

Node supervisor card not responding to commands.– Go to “MAP 0110: Supervisor Subsystem” on page 1-10.

014

Processor node is IPLing.Do 3-digit LEDs eventually indicate completion of IPL sequence (i.e. blank or “uuu”)?Yes No

015

Processor node has problem IPLing.Do 3-digit LEDs stop at constant 200?Yes No

016

– Go to Step 008 on page 1-88 to continue service.

017

Problem with SECURE signal.– Go to Step 024 on page 1-77 to continue service.

018

– From node front panel display, click on “TTY” button. to open a TTY console.– From the TTY console:

� Select “Advanced Diagnostic Routines”� Select “System Verification”� Select “Base System”.

– Follow directions for the “Key Mode Switch Test”, setting the mode switch from the processor node‘sfront panel on the control workstation.




018 (continued)Does this test indicate a failure?Yes No

019

– From the control workstation, reset this processor node.Does processor node reset?Yes No

020

Problem with reset.– Go to Step 024 to continue service with the next highest priority component.

021

Node reset and mode switches functioning properly.Was this a solid problem? (If the problem was cleared by power-on only, answer No.)Yes No

022

This is an intermittent problem.– Please record following tracking information:

� Node number� Date / Time fault reported� Type of fault reported� Action taken or component replaced


023


024

Problem with reset or mode switch function.– From the control workstation power off processor node.– Place processor node in service position.– Remove processor node from frame, then remove top cover of processor node.– Refer to the following table for priority of repair or replacement of components.




1 Cable N00-NS-P107 to N00-PL-P22 1. Check for proper seating and continuity. SeeTable 1-7 on page 1-78. If no problem is found,continue at Priority 2.

2. Repair or replace cable assembly as required.3. Go to Step 025 on page 1-78 to verify fix.

2 Node Supervisor Card 1. Replace card.2. Perform "Verification Test for Supervisor Bus" in

IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures.

3. Go to Step 025 on page 1-78 to verify fix.

3 Planar Board 1. Replace board.2. Go to Step 025 on page 1-78 to verify fix.


Node supervisor card N00-NS-J107 to I/O planar N00-PL-J22 cable check points:

Table 1-7. Cable Continuity Check Points

Signal From To

Reset N00-NS-P107 pin A12 N00-PL-P22 pin 7

Service N00-NS-P107 pin A13 N00-PL-P22 pin 3

Secure N00-NS-P107 pin B12 N00-PL-P22 pin 2

025

Component has been repaired or replaced.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– If not already done, verify that cables and components are seated properly.– If not already done, install processor node top cover, then reinstall processor node in frame.– Put the circuit breaker at the front of the processor node in the On (‘1’) position.– Go to Step 018 on page 1-76 to continue service.

026

No response from TTY console for a processor node.– Make sure processor node was IPLed in NORMAL mode.– From system file server, telnet into this processor node:

telnet nodename– Log in as “root”.– Check to make sure that the TTY port on the processor node is correctly defined per customer require-

ments.

1. Check console configuration by issuing the following command in the processor node's window:

smit console

Use the menu options to check and/or reconfigure the console as required. If the console is notconfigured to use the TTY port, then the processor node will not print messages to the screenduring IPL.




026 (continued)2. Check the TTY configuration by issuing the following command in the processor node's window:

smit tty

Use the menu options to check and/or reconfigure the “s1” TTY port as required. The proper TTYparameters are listed in IBM RS/6000 SP: Administration Guide.

Is the TTY port defined properly, and the console setup to use the TTY port?Yes No

027

TTY not responding due to customer configuration.– Customer must configure these parameters.– Go to “MAP 0570: End of Call” on page 1-357.

028

Problem due to hardware.– Close console TTY window (if already open)– Log into the node over the Ethernet:

telnet nodename– Enter the following command:

chcons /dev/tty1– Use diag command to run regular (not advanced) diagnostics on “TTY0”.Do the diagnostics pass (no problem found)?Yes No

029

– Replace I/O planar board.– Go to Step 031 on page 1-80.

030

– Log into the node over the Ethernet:

telnet nodename

– Enter the following command:

chcons /dev/tty0– From the control workstation, make sure the node front panel display is open.– Close TTY console at this time.– Have the customer remove the processor node from the active configuration, and power off the

processor node.– Place processor node in service position.– Refer to the following table for priority of replacement or repair of components.




1 Cable N00-NS-P104 to N00-PL-P16 1. Check for proper seating. If no problem found, con-tinue at Priority 2.





3 Planar Board 1. Replace board.2. Go to Step 031 on page 1-80 to verify fix.


031

Component has been repaired or replaced.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– As processor node completes IPL, check the TTY console window.– From the control workstation node front panel display, put the processor node in SERVICE mode.– Put the circuit breaker at the front of the processor node in the On (‘1’) position.Do you get any data on the TTY console screen?Yes No

032

– Go to Step 030 on page 1-79 to service the next highest priority component.

033

Processor node IPLed in SERVICE mode.– From the TTY console:

� Select “Advanced Diagnostic Routines”� Select “System Verification”� Select “Base System”

Does processor node pass all diagnostics?Yes No

034

– Repair problem as indicated by diagnostics. Use “MAP 0130: Processor Node” on page 1-30 asnecessary.

035

Problem resolved.– Reboot node in NORMAL mode.– Log into the node over the Ethernet:

telnet nodename(Step 035 continues)



035 (continued)– Enter the following command:

chcons /dev/tty0– Go to “MAP 0570: End of Call” on page 1-357.

036

3-digit LED problem.– Have the customer remove the processor node from the active configuration and power off the

processor node.– Put the circuit breaker at the front of the processor node in the Off (‘0’) position.– Place processor node in service position.– Refer to the following table for priority of replacement or repair of components.


1 Cable N00-NS-P106 to N00-PL-P23 1. Check for proper seating. If no problem found,continue at Priority 2.

2. Repair or replace cable assembly as required.3. Go to Step 037 to verify fix.



3. Go to Step 037 to verify fix.

3 Planar Board 1. Replace board.2. Go to Step 037 to verify fix.

4 All Replaced Call next level of support.

037

Component has been repaired or replaced.– Remove processor node from service position.– Connect all cables at rear of processor node.– From the control workstation, power on this processor node.– From the control workstation, make sure the 3-digit LEDs for this processor node are displayed on the

screen.– Check the 3-digit LEDs for the IPL sequence.Do the 3-digit LEDs indicate the IPL sequence?Yes No

038

– Go to Step 036 to service next highest priority component.

039

– From the TTY console:





039 (continued)Does processor node pass all diagnostics?Yes No

040


041


042

Yellow or green LED on processor node is not functioning.– Have the customer remove the processor node from the active configuration and power off the

processor node.– Put the circuit breaker at the front of the processor node in the Off (‘0’) position.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures, ignoring PASS/FAIL results.Do the yellow and green LEDs light at any time?Yes No

043

– Place processor node in service position.– Replace LED display card.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.Does green LED light at any time?Yes No

044

– Replace the node supervisor card.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures to verify replacement.– Go to Step 046.

045

Problem resolved.– Remove processor node from service position.– Put the circuit breaker at the front of the processor node in the On (‘1’) position.– Go to “MAP 0570: End of Call” on page 1-357.

046

All LEDs are operating.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put the circuit breaker at the front of the processor node in the On (‘1’) position.(Step 046 continues)



046 (continued)– Go to “MAP 0570: End of Call” on page 1-357.


MAP 0180: Thin Processor Node DC Short/Open

MAP 0180: Thin Processor Node dc Short/OpenNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

Problem in processor node power distribution detected by checking resistances of +5 V dc, +12 V dc,and/or −12 V dc to ground. The following table refers to I/O Planar jack N00-PL-J2:



+5 V dc Pin 1 (red) Pin 2 (black) 5 - 30 Ohms

+12 V dc Pin 3 (yellow) Pin 2 (black) 100 - 5000 Ohms

−12 V dc Pin 9 (purple) Pin 2 (black) 500 - 900 Ohms

Was resistance below acceptable range?Yes No

002

Measured resistance is too high.– Check for one or more of the following conditions:

� Open in planar power cable from node supervisor card N00-NS-J102 to I/O planar N00-PL-J2.� Open voltage plane in I/O planar caused by a shorted component.

– Remove all adaptor cards, memory cards, fixed disk drives, and the CPU card from the I/Oplanar. Inspect components for damage.

– Remove I/O planar and inspect for damage.– Replace any damaged components found during inspection.– Continue at Step 009 on page 1-85.

003

Measured resistance is too low.Are there any Micro Channel slots empty?Yes No

004

Micro Channel power specifications may be exceeded by card requirements.Has customer recently added or exchanged Micro Channel adaptors?Yes No

005


006

– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Remove the most recent adaptor(s) from this processor node.(Step 006 continues)



006 (continued)– Reinstall processor node, then power on the processor node from the control console.Does this fix the problem?Yes No

007

Problem still exists.– Go to Step 009.

008

This adaptor was causing problem.– Call next level of support.

009

– Clip multimeter leads to the connector pins of N00-PL-J2 for the voltage that shows resistance out ofrange.

– Remove affecting components (see chart below) until all components have been removed or resistanceenters acceptable range.

Note: Parts are ordered by probable cause of failure. ‘X’ indicates voltage is used.

The following table refers to I/O Planar jack N00-PL-J2:



+5 V dc Pin 1 (red) Pin 2 (black) 5 - 30 Ohms

+12 V dc Pin 3 (yellow) Pin 2 (black) 100 - 5000 Ohms

−12 V dc Pin 9 (purple) Pin 2 (black) 500 - 900 Ohms

# Component +5 V dc +12 V dc −12 V dc

1 CPU card (Thin node or thin node 2) X

2 Memory card (slot A) X

3 Memory card (slot B) X

4 Micro Channel card (slot 1) X X X




8 Ethernet riser card X X X

9 Fixed disk drive(s) X X




009 (continued)Was a component replaced and the measured resistance now within range?Yes No

010

– Remove the next highest priority component from list in Step 009 on page 1-85.Did resistance increase to acceptable range?Yes No

011

Component with short has not yet been located.Have all components in the list been removed?Yes No

012

– Return to Step 010 to pull next part.

013

– Replace the I/O planar board.– Reinstall all other original components.– Go to Step 009 on page 1-85 to verify the resistance.

014

– Replace component.– Reinstall all other original components.– Return to Step 009 on page 1-85 to verify the resistance.

015

– Reconnect planar power cable N00-PL-P2 at I/O planar board.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put the circuit breaker on the front of the processor node in the On (‘1’) position.Does the processor node power on okay?Yes No

016


017



MAP 0190: Processor Node Function

MAP 0190: Processor Node Function001





Open the TTY to the failing node. Real-time error data can be observed that can help with problem deter-mination and repair.

Processor problem detected by RS/6000 logic.– From the system monitor on the control workstation or from Perspectives, obtain processor node front

display.

� Check 3-digit LEDs from the processor node front panel display.� If the LEDs display flashing ‘888’:

– For thin and wide processor nodes , click on “RESET” button to read any sequence ofnumbers that follow; repeat RESET/read LEDs until LEDs display ‘888’ again.

– For 604 or 604e high processor nodes , record values displayed after the ‘888’. If you see ‘---’(three dashes), look at the 3-digit display. (Choose the 3-digit display from the “All NodeSummary Display.”)

– For 332 MHz SMP or POWER3 SMP nodes , use mouse button 3 on the 3-digit display foradditional information.

– For SP-attached servers , use mouse button 3 on the 3-digit display for additional information.

– Record the LED value or sequence for reference.– Power off and power on processor node from the control workstation.Are any different 8-digit LED values displayed during node power on or power off?Yes No

002

Does processor node completely IPL?Yes No

003


004

– Check record of this processor node to see if it experiences excessive fails (more than one perweek).




004 (continued)Does this processor node experience frequent problems?Yes No

005

– Record intermittent problem.– Go to “MAP 0570: End of Call” on page 1-357.

006


007

– Record the new LED value or sequence.– Check the service process logs– From the control workstation power off processor node.– From node front panel display, click on “TTY” button to open a TTY console.– From the TTY console:

� Select option 3 on the Main Menu� Select option 4 on the System Information Menu

– Record the log information and clear the log.– Go to “MAP 0100: Start of Service Call” on page 1-4 with the new error information.

008


Condition of LEDs Action

� LEDs display uuu

–

Commonly used to indicate that processornode has completed IPL.

IPL okay. Treat as blank LEDs.

� LEDs display u98

– Indicates processor node is IPLed in mainte-nance mode.

Refer to "Selecting a Processor Node Boot Response"in IBM RS/6000 SP: Maintenance Information, Volume3, Locations and Service Procedures for more informa-tion.

� LEDs display u## or ##u

– Indicates status of SP-unique software.

IPL or software installation in progress. If they do notchange within 30 minutes, use the IBM ParallelSystem Support Programs for AIX: Diagnosis Guide todiagnose the software/hardware problem.

� LEDs stop at 103 during IPL

– Problem with reset function.

Go to Step 024 on page 1-77, Step 024 onpage 1-113, or Step 024 on page 1-138.


– IPL attempted in SECURE mode.

1. From the node front panel, put processor node inSERVICE or NORMAL mode (as appropriate),then click on RESET to reset processor node.

2. If this reoccurs, go to “MAP 0170: Thin ProcessorNode Control” on page 1-74, “MAP 0230: WideProcessor Node Control” on page 1-110, or “MAP0270: 604 or 604e High Node Control” onpage 1-135 to fix mode switch problem.




� LEDs stop at 214/215 during IPL,

� Obtained of the following RS/6000 SRNs:

– 128- 100 through 195

– 143- 714/715/814/815

– 144- 514/515

– 146- 014/015/314/315

– 148- 111/112/114/115/190/197

1. Use power MAPs in RS/6000 Installation andService Guide referencing “MAP 0140: ThinNode/Thin Node 2 Environment” on page 1-50,“MAP 0150: 120/160 MHz Thin NodeEnvironment” on page 1-60, “MAP 0210: WideProcessor Node Environment” on page 1-98, or“MAP 0250: 604 or 604e High Node Environment”on page 1-124, as required.

2. Go to Step 009 on page 1-93 to check for anyadditional actions required to complete a FRUreplacement.

� LEDs cycling through values in the range 222 -260 or a constant 269 during IPL.

– Processor node is unable to boot.

Go to “MAP 0200: Processor IPL Problem” onpage 1-94.

� LEDs stop at 262 during IPL 1. If processor node mode switch is not set forSERVICE mode, go to “MAP 0170: ThinProcessor Node Control” on page 1-74, “MAP0230: Wide Processor Node Control” onpage 1-110, or “MAP 0270: 604 or 604e HighNode Control” on page 1-135 to fix mode switchproblems.

2. From the node front panel, click on “OPEN TTY”to open the TTY console on this processor node.

3. Press ‘1’ then ENTER in the TTY console window.

4. SERVICE IPL should continue.

� LEDs stop at 292 during IPL Problem configuring SCSI/SSA/serial device.

If the failing device is the device you want to bootfrom, or is another device in the boot chain (beforeyour device), the system will not boot. To isolate theproblem, minimum configuration of DASD bootableadapters may be required. See "Diagnosing an LED292 Hang Condition" in IBM RS/6000 SP: Mainte-nance Information, Volume 3, Locations and ServiceProcedures.

� LEDs stop at 553 or 570 during IPL Problem configuring SCSI device.

1. If processor is currently booting from disk, go to“MAP 0200: Processor IPL Problem” onpage 1-94.

2. If processor is booting over network and otherdevices are still attached, disconnect SCSIcable(s) from SCSI MCA or I/O planar, then go toStep 003 on page 1-95.

3. If processor is booting over network and nodevices are attached, at SCSI MCA or I/O planar,then replace SCSI MCA or I/O planar.

� LEDs stop at constant 83u OR 888-103-762-xxx

– Problem with HiPS Adapter-2 or SP Adapter.

Go to “MAP 0540: Switch Function” on page 1-322

Note: LED 83u corresponds to SRN of type 83C-xxx.


– Problem with BMCA feature.

Go to “MAP 0560: Block Multiplexer Channel Adapter(BMCA)” on page 1-353.




� LEDs stop at constant 888 (followed by no othersequence of numbers)

– IPL not starting.

1. Remove processor node from frame. Refer to"Service Position Procedures" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations andService Procedures for these procedures.

2. Check for proper seating of cards in the processornode, especially the CPU planar and the super-visor card.

3. If this is a thin node, perform Step 010 onpage 1-51. If the answer is no, continue withservice at Step 011 on page 1-51; otherwise, theSRN is 101-888; use SRN table in DiagnosticInformation for Micro Channel Bus Systems(SA38-0532) or Diagnostic Information for MultipleBus Systems (SA38-0509).

4. If this is a wide node, perform Step 008 onpage 1-99. If the answer is no, continue withservice at Step 009 on page 1-100; otherwise, theSRN is 101-888; use SRN table in DiagnosticInformation for Micro Channel Bus Systems(SA38-0532) or Diagnostic Information for MultipleBus Systems (SA38-0509).

5. If this is a high node, go to “MAP 0280: 604 or604e High Node Minimum Configuration” onpage 1-145.

� LEDs stop at constant 980

– Problem with HiPS adapter-1.

Go to “MAP 0540: Switch Function” on page 1-322.

� LEDs stop at c20 - c29 during IPL

– Node boot information corrupted.

Call software support.

� LEDs stop at c31 during IPL 1. From the node front panel, click on “OPEN TTY”to open the tty console on this node.

2. Press “1” then ENTER in the tty console window.

3. Service IPL should continue.

� LEDs at 888-103 followed by this sequence ofnumbers:

– 409-008

– 409-022

1. Remove processor node from frame. Refer to"Service Position Procedures" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations andService Procedures for these procedures.

2. Check for proper seating of cards and cables onIOD.

3. Check flex cables for damage and freedom ofmotion on the “floating” connector.

4. Change any suspected problem flex cables.

5. Go to “MAP 0280: 604 or 604e High NodeMinimum Configuration” on page 1-145.

� LEDs at 888 followed by this sequence ofnumbers:

– 409-070/073/074/075

– 409-076/077/078/079

– 409-093/094/095/096

Go to Diagnostic Information for Micro Channel BusSystems (SA38-0532) or Diagnostic Information forMultiple Bus Systems (SA38-0509) to decode the fannumber information. Then go to MAP 0250: 604 or604e High Node Environment, Step 034 onpage 1-128.




� 8-Digit LED:

– 25Cxxxxx

�

Use mouse button 3 on the 3-digit display to seethe Additional Info popup, or use

hmmon -GQ Frame Node

Go to the location codes in RS/6000 SP: Mainte-nance Information, Volume 3 for a description ofP1-mx.x . For 332 MHz SMP Node memory card -DIMM locations, refer to "Location Diagrams of theRS/6000 SP Components" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations andService Procedures.

� If DIMM replace did not fix the problem, call nextlevel of support.

� All other 8-digit LED values (other than 25Cxxxxx)and 4-digit LED values.

Go to the "Error Code to FRU Index" in RS/6000 SP:Maintenance Information, Volume 3.




� All other constant LED values

� LEDs at 888 followed by any other sequence ofnumbers

Go to the RS/6000 start MAP in the Diagnostic Infor-mation for Micro Channel Bus Systems (SA38-0532)or Diagnostic Information for Multiple Bus Systems(SA38-0509) to check SRN.

Note: Refer to Table 1-6 on page 1-33,in this publi-cation, to find the equivalent RS/6000 model.

Use the failing function code and description toperform service or to replace the most probable failingcomponent. Refer to IBM RS/6000 SP: MaintenanceInformation, Volume 3, Locations and Service Proce-dures for processor node locations and removal andreplacement procedures, or RS/6000 SP: MaintenanceInformation, Volume 4 for part numbers, as required.

Notes:

1. If the SRN indicates a memory problem, checkthat all the memory is of the same operatingspeed, and you should also consider the CPU andplanar as potential FRUs.

2. If this is a 135 MHz wide processor node, and theSRN indicates a problem with the CPU, changethe V dc converter daughter card before replacingthe CPU card.

3. If this is a 604 or 604e high node, consider lateralplanar 1 card and lateral planar 2 card as possiblecause of this problem. If directed to the 7015Models R30, R40, and R50 CPU Enclosure Instal-lation and Service Guide Map 1540, use “MAP0280: 604 or 604e High Node MinimumConfiguration” on page 1-145 in this volume.

4. If this is a SP-attached server (RS/6000 MachineType 7017-S70 and S7A), consult the RS/6000Enterprise Servers S70 and S7A Installation andService Guide to perform any required serviceaction.


Then run diagnostics from SERVICE mode asdescribed in "Running Diagnostics in a ProcessorNode" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures.

� Machine check (604 and 604e high processornodes)

Go to "Diagnosing a Machine Check (604 or 604eHigh Node)" in IBM RS/6000 SP: Maintenance Infor-mation, Volume 3, Locations and Service Procedures.

– Continue at Step 009 on page 1-93.

009




009 (continued)– Check the following table for any additional actions that must be performed to recover use of the

processor node following certain FRU replacements.

Note: The procedures in this table can be found by the customer in IBM RS/6000 SP: AdministrationGuide, under the section entitled “Reconfiguring the RS/6000 SP System”.

Has the processor node been recovered?Yes No

010

Have all the parts listed in Diagnostic Information for Micro Channel Bus Systems, (SA38-0532) orDiagnostic Information for Multiple Bus Systems, (SA38-0509) and Adapters, Devices and CableInformation, (SA38-0533) been replaced?Yes No

011

– Replace next priority part.– Go to Step 009.

012


013


Replaced Part Required Customer Action

� System I/O Planar (Thinprocessor node)

� Ethernet adapter in MicroChannel slot 1 (Wide or604 (or 604e) highprocessor node)

Have customer perform "Updating the Ethernet Hardware Address" in IBMRS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-dures.

Fixed Disk #1 (Boot DASD) Have customer perform the following steps to reinstall an AIX image on thisDASD.

1. Use the spbootins command to select a boot_response of “install”:a. Determine frame# and slot# of this processor node.b. Issue the following command from the control workstation:

spbootins -r install frame# slot# 12. From the “Global Controls” window, perform a Network boot on this

processor node.3. The processor node should boot and install AIX on fixed disk #1.


MAP 0200: Processor IPL Problem

MAP 0200: Processor IPL ProblemProcessor node does not IPL. The 3-digit LEDs continuously cycle within the range 222-260 or a constant269 (see Step 008 on page 1-88). Record this value for later use.

Note: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for either placing a processor node into service position, orremoving it from service position.

001

The file system for each processor node may reside on an internal fixed disk or an externally attacheddevice. Enter the command:

splstdata -b

to check the response field.– Determine the IPL device for this processor node.– The list below helps determine the IPL devices; however, customers may have customized configura-

tions.

Condition Default IPL Device

Thin/wide/high processor node:

� Normal operation

� Response field indicates “disk”

� Problem with SCSI device

Boot disk (most likely disk #1)

Wide processor node:

� Response field indicates “install,” “customize,” or“maintenance”

Micro Channel Ethernet adapter

High processor node:


Micro Channel Ethernet adapter

Thin processor node:


Integrated Ethernet card

– Go to Step 002.

002


IPL Device Action

Boot disk Go to Step 003 on page 1-95.

Integrated Ethernet card Go to “MAP 0500: Ethernet LAN” on page 1-288, toisolate a software problem affecting this processornode’s Ethernet LAN connection.

Micro Channel Ethernet adapter Go to “MAP 0500: Ethernet LAN” on page 1-288, toisolate a software problem affecting this processornode’s Ethernet LAN connection.



003

– Problem IPLing from boot disk.

� Determine the normal boot disk by entering the splstdata -b command and checking the install_diskfield.

� Prepare to IPL and run diagnostics from Ethernet LAN by performing the procedure in "Basic Stand-Alone Mode (From Network Boot) in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for this processor node.

Does the processor node IPL?Yes No

004

Processor node does not complete IPL over Ethernet.– Recheck procedures in Step 003 for any mistakes.Is there an obvious problem?Yes No

005

Problem may be in software or hardware.– Check the 3-digit display for this processor node for non-blank values.Do you get a problem indication in the 3-digit display?Yes No

006

Probable software problem.– Call next level of support.

007

– Go to “MAP 0190: Processor Node Function” on page 1-87 to continue service.

008

– Fix the obvious problem(s).– Go to Step 003 to continue service.

009

Processor node has completed IPL in maintenance mode.– For the following steps, refer to "Basic Stand-Alone Mode (From Network Boot) in IBM RS/6000 SP:

Maintenance Information, Volume 3, Locations and Service Procedures.– Check device list for a SCSI device like:

� “scsi0” (SCSI port on I/O planar)

� ““ascsi...”, “vscsi1...” (SCSI MCA).

– Check device list for the problem “hdisk...” (fixed disk).– For all appropriate “scsi0”, “vscsi...”, and “hdisk...” devices, run diagnostics against the device and check

results.(Step 009 continues)



009 (continued)Does device list include “hdisk...” and does diagnostics pass for “hdisk...”?Yes No

010

Problem detected.– Note any diagnostic results before continuing.– Put the circuit breaker(s) at the front of the processor node in the Off (‘0’) position.– Go to Step 011.

011

– Ensure that the processor node is in service position.– Use the following prioritized table to continue service:


1 � Device list does not include anydevice(s) like “scsi0” or “ascsi0”.

� Diagnostics fail for device(s) like“scsi0” or “ascsi0”.

1. If diagnostics indicate the cause of failure,perform service based on the diagnostics results,then go to Step 012.

2. Replace I/O planar.3. Go to Step 012.

2 � Device list does not include anySCSI MCAs like “ascsi...” or“vscsi...”.

� Diagnostics fail for SCSI MCAs“ascsi...” or “vscsi...”.

1. If diagnostics indicate the cause of failure,perform service based on the diagnostics results,then go to Step 012.

2. Replace SCSI MCA card.3. Go to Step 012.

3 � Device list does not include theproblem “hdisk...”

� Diagnostics fail for the problem“hdisk...”.

� “hdisk missing”

1. Check the SCSI bus cables (and SCSI riser cardif present) for a loose connection or damagedcable, especially at this disk. Also check for aloose or missing terminator. (For 604 and 604ehigh nodes, refer to the media drawer diagram in"Removing the 604 or 604e High Node DASD" inIBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Proceduresshowing the SCSI path and power cable.)

2. Check the power cables for this disk at both endsfor a loose connection or damaged cable.

3. Check DASD addressing. Refer to Adapters,Devices, and Cable Information for Micro-ChannelBus Systems, SA38–0533, for the requiredjumper information.

4. If a cable problem is found, repair or replacecable, then go to Step 012.

5. If no cable problem is found, replace disk, then goto Step 012.

4 Diagnostics pass for the problem“hdisk...”.


012

Component repaired or replaced.– Put the circuit breaker(s) at the front of the processor node in the On (‘1’) position.(Step 012 continues)



012 (continued)– Go to Step 003 on page 1-95 to continue service.

013

Diagnostics pass for both SCSI port and boot disk.– Refer to "Basic Stand-Alone Mode (From Network Boot) in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures to exit from the verification menu.– Change boot response to “disk”, using "Selecting a Processor Node Boot Response" in IBM RS/6000

SP: Maintenance Information, Volume 3, Locations and Service Procedures.Did you replace the boot disk?Yes No

014

– From the control workstation, power off and on this processor node.Does this processor node IPL?Yes No

015

Probable software problem (AIX image on boot disk may not be functional).– Call next level of support.

016

– Go to Step 017.

017

Hardware problem resolved.– Inform the customer to use the appropriate procedures in IBM RS/6000 SP: Administration Guide to

reinstall (or recover) an AIX image on the fixed disk.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to “MAP 0570: End of Call” on page 1-357.


MAP 0210: Wide Processor Node Environment

MAP 0210: Wide Processor Node EnvironmentNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

System monitor log reports “Warning”, “Shutdown”, or “Failure” message associated with processor node.Does message indicate “Shutdown” or “Failure”?Yes No

002

Message is a warning only.Does this same message occur on more than one processor node?Yes No

003

No immediate service required.– Preventative maintenance can be done now by returning to Step 001, and treating the


004


005



– Based on the text of the message, use the following table to continue service:

Condition Action

“...P48OK...” Go to “MAP 0220: Wide Processor Node Power” onpage 1-105.

“...shutdownP5m...”“...shutdownP4...”“...shutdownP5i...”“...shutdownP12...”“...shutdownN12...”

Go to Step 006.




006




006 (continued)One or more of the following conditions exist:

Voltage out of range: +4 V “shutdownP4”Voltage out of range: +5 VM “shutdownP5m”Voltage out of range: +5 VI “shutdownP5i”Voltage out of range: +12 V “shutdownP12”Voltage out of range: −12 V “shutdownN12”Planar power problem: +4 V, +5 VM, +5 VI, +12 V, or −12 V

– Place processor node in service position.– Remove power compartment cover.– Check cable conditions at node supervisor card N00-SV-J102 and power card N00-PC-J60. Check con-

dition of cable wires, especially J60 pin 37 to J102 pin 11, and the appropriate connection (based onmessage) shown below:

Voltage Power Card - J60 Node Supervisor - J102

+4 V N00-PC-P60 pin 3 N00-SV-P102 pin 29

+5 VM N00-PC-P60 pin 1 N00-SV-P102 pin 27

+5 VI N00-PC-P60 pin 5 N00-SV-P102 pin 31

+12 V N00-PC-P60 pin 7 N00-SV-P102 pin 33

−12 V N00-PC-P60 pin 10 N00-SV-P102 pin 35

Does the power control/sense cable appear to be okay?Yes No

007

Problem with node supervisor control cable (N00-SV-P102).– Go to Step 015 on page 1-101, Priority 4, to replace cable.

008

– Disconnect cable at N00-SV-J102 and N00-PC-J60.– Based on the message, use the information in the table below to disconnect the appropriate cable and

check resistance between the cable pins.

Voltage CableFrom(positive lead)

To GND(negative lead)

Acceptable Range(in ohms)

+4 V N00-PC-P16A Pin 4 Pin 10 6 - 25

+5 VM N00-PC-P13A Pin 4 Pin 10 1K - 5M

+5 VI N00-PC-P40AN00-PC-P45N00-PC-P65

Pin 10Pin 4Pin 4

Pin 1Pin 3Pin 3

10 - 30100 - 500*100 - 500*

+12 V N00-PC-P40AN00-PC-P45N00-PC-P65

Pin 6Pin 1Pin 1

Pin 1Pin 2Pin 2

800 - 100K1K - 5K*1K - 5K*

−12 V N00-PC-P40A Pin 3 Pin 1 1K - 20K*

Note: *Resistance range assumes DASD(s) attached on this cable. With no DASD(s) attached, an open will bemeasured.




008 (continued)Are all measured resistances in the acceptable range?Yes No

009

– Leaving cable where resistance was measured in Step 008 on page 1-99 disconnected, discon-nect other end(s) of cables from all devices.

– The following list shows cable connections:

Cable (short detected)N00-PC-P16A: CPU planar J16N00-PC-P13A: CPU planar J13, J14N00-PC-P40A: I/O planar J40, J41N00-PC-P45: DASD P3, DASD P4N00-PC-P65: DASD P1, DASD P2

– When the cable is entirely disconnected, check for short between voltage and GND pins per tablefrom Step 008 on page 1-99.

Does disconnected cable show a short condition?Yes No

010

– Reconnect cable at locations shown in Step 009.– Go to “MAP 0240: Wide Processor Node dc Short/Open” on page 1-120.

011

– Replace cable.– Reconnect all cables inside the processor node.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breaker at front of processor node in On (‘1’) position.– Go to “MAP 0570: End of Call” on page 1-357.

012

– Replace the components listed in the table below, one at a time:

Priority Component

1 Node power card

2 Wide node supervisor card

3 Cable N00-SV-P102

4 Call next level of support

– Reconnect all cables inside processor node.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breaker at front of processor node in On (‘1’) position.– Wait 20 seconds, then check Environmental (Yellow) LED for flashing condition.(Step 012 continues)

1-100 RS/6000 SP MAPs


012 (continued)Is the Environmental (Yellow) LED flashing?Yes No

013


014

– Put circuit breaker in front of processor node in the Off (‘0’) position.– Place processor node in service position.– Remove power compartment cover.– Go to Step 012 on page 1-100 to service next component.

015


� Warning Fan: “fanwarning1”, “fanwarning2”, ..., “fanwarning5”


– Place processor node in service position.– Use the following table to reseat or replace components:


1 Fan 1, 2, 3, 4 or 5 1. Check specified fan for blockage or loose cableconnection.



2 Fan 1, 2, 3, 4 or 5 1. Replace fan as described in "FRU Removals andReplacements" in IBM RS/6000 SP: MaintenanceInformation, Volume 3, Locations and Service Pro-cedures.









Figure 1-16. Wide Node Supervisor Control Cable

016

Component replaced or reseated.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breaker at the front of processor node in the On (‘1’) position.– Check the Environmental (yellow) LED for an ON or FLASHING condition.Is the Environmental (yellow) LED ON or FLASHING?Yes No

017


018

– Put circuit breaker at the front of the processor node in the Off (‘0’) position.– Go to Step 015 on page 1-101 to service next highest priority component.

019




1-102 RS/6000 SP MAPs



020



021

– Go to Step 024.

022

Node supervisor card is okay.– Put circuit breaker at the front of the processor node in the On (‘1’) position.– Check Environmental (yellow) LED for ON or FLASHING condition.Is Environmental (yellow) LED ON or FLASHING?Yes No

023


024


025


026

– Fix obvious problem.– Go to Step 022.

027

– Place processor node in service position.– Power off the processor node, and remove blockage.– Reconnect all cables at rear of the processor node.– With Environmental (yellow) LED Off, power on the processor node.(Step 027 continues)



027 (continued)Does the processor node IPL?Yes No

028


029


030




031

Problem may be: base memory card, CPU card, I/O planar, or node supervisor control cable.– Replace parts, one at a time, until problem is corrected.Are you able to correct the problem?Yes No

032


033


034

Check memory card and SIMM part numbers in Diagnostic Information for Micro Channel Bus Systems,(SA38-0532) and Adapters, Devices and Cable Information, (SA38-0533) to ensure that they are compat-ible with the fastest Type 7013 machines.– If necessary, call next level of support.

1-104 RS/6000 SP MAPs

MAP 0220: Wide Processor Node Power

MAP 0220: Wide Processor Node PowerNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

– From the system monitor, check the Power (green) LED for this processor node.The definition of the Power (green) LED is as follows: Power (Green)





002

Processor node getting 48 V dc power.Is Power (green) LED flashing?Yes No

003

Power (green) LED is On, indicating no problem with power supply.– Verify that you have the proper processor node, then go to “MAP 0130: Processor Node”

on page 1-30.– If this is the proper processor node, call the next level of support.

004

Processor node is getting power.– Power on RS/6000 logic from the virtual front panel on the control workstation.Does Power (green) LED light and stay lit?Yes No

005

Processor node not responding to the command.– Go to “MAP 0110: Supervisor Subsystem” on page 1-10.

006


007




008

No problem detected.– Record reason for power-off condition.– Go to “MAP 0570: End of Call” on page 1-357.

009

– Go to Step 010

010

– Check circuit breaker at front of processor node. Put this circuit breaker in the On (‘1’) position if it is notalready.

Does the circuit breaker go (trip) to the Off (‘0’) position?Yes No

011


012

– Place processor node in service position.– Check node power harness (at power card N00-PC-P1 and N00-PC-P2 and circuit breaker) inside

processor node for any obvious problems which might cause a short.Does node power harness appear okay?Yes No

013

– Fix obvious problem(s). If necessary, replace node power harness.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to Step 010.

014

– Put circuit breaker in On (’1’) position.– Using multimeter, check for a short between either tab of circuit breaker and a dc converter heatsink

screw on the power card.– Perform ‘Actions’ from table one at a time until 48 V short disappears:

Order Action Replace

1 Unplug P102 from node supervisor. Node supervisor card.

2 Unplug P60 from power card. Replace N00-PC-P60 cable.

3 Both unplugged. Replace node power card.

– If “Action” above removes short condition, replace the corresponding part in the “Replace” column.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to Step 010.

1-106 RS/6000 SP MAPs


015

– From control workstation or processor node, check Power (green) LED for this node.Is Power (green) LED Off?Yes No

016


017

– Check processor node(s) on any other dc power harness for any that are powered on. Ensure that theother processor node has its circuit breaker in the On (‘1’) position.

– Check the Power (green) LED for an On or Flashing condition.– Processor nodes receive 48-volt power through one of four power harnesses. The sets of processor

nodes are as follows:

PDU-BH-P1: Processor nodes 1, 2, 3, 4PDU-BH-P2: Processor nodes 5, 6, 7, 8PDU-BH-P3: Processor nodes 9, 1ð, 11, 12PDU-BH-P4: Processor nodes 13, 14, 15, 16

Is the Power (green) LED on any other processor node On or Flashing?Yes No

018


019

– Check all other processor nodes on the same dc power harness as the failing processor node to checkfor the same symptom - circuit breaker on but Power (green) LED not lit.


020

Problem with 48 V dc power distribution.– Go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283.

021

– Check cable connection at processor node tailgate N00-BH-J8 for a good connection.Is there a good connection?Yes No

022

– Fix cable connection problem.– Go to Step 015.

023




024

– Put circuit breaker at front of processor node in the Off (‘0’) position.– Place processor node in service position.– Put circuit breaker at front of processor node in the On (‘1’) position– Unplug node 48 V dc harness from node power card at N00-PC-P2 (black wire).– Using a digital multimeter, check for continuity from node tailgate N00-BH-J8 pin 1 to N00-PC-P2 (black

wire).Is there continuity?Yes No

025

– Check continuity between two tabs of processor node circuit breaker.Is there continuity?Yes No

026

Problem with circuit breaker.– Replace processor node circuit breaker.– Replug N00-PC-P2.– Go to Step 031 to verify fix.

027

Problem with node 48 V dc harness inside processor node.– Replace the node 48 V dc harness N00-PC-P2 inside this processor node.– Go to Step 031 to verify fix.

028

– Unplug power service cable at node supervisor card N00-SV-J102 and node power card N00-PC-J60.– Check cable continuity between N00-SV-P102 pin 39 and N00-PC-P60 pin 15.Is there continuity?Yes No

029

– Replace cable N00-SV-P102. Refer to Figure 1-16 on page 1-102 for cable connections.– Go to Step 031 to verify fix.

030

– Replace the node power card. Make sure to replug all cables, including the node power harness.– Go to Step 031 to verify fix.

031

– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breaker at front of processor node in the On (‘1’) position.– Check Power (green) LED for an OFF condition.(Step 031 continues)

1-108 RS/6000 SP MAPs


031 (continued)Is the Power (green) LED OFF?Yes No

032


033

Problem with the 48 V dc power distribution to this processor node.– Go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283.


MAP 0230: Wide Processor Node Control

MAP 0230: Wide Processor Node ControlAttention: The processor node(s) must be removed from active configuration before continuing. Ifprocessor node(s) is/are off, continue; otherwise, ask customers to initiate shutdown procedure andpower-off processor node(s) from the control workstation, or defer maintenance until all jobs are com-pleted. Powering off a processor node(s) in a parallel environment will cause all jobs to flush from thequeue and switch initialization to rerun.




001


Condition Action

� 3-digit LEDs displayed but missing segments orremain blank



� Mode switch problem—problem setting NORMAL,SECURE, or SERVICE.

Go to Step 002.

� No response from TTY console Go to Step 026 on page 1-114.


002



– From the control workstation, open the node front panel display.– Make note of the mode switch position for this processor node.– Set mode switch to something other than that recorded above.– If not already there, set the mode switch to SERVICE.



003

– Problem not related to mode switch.(Step 003 continues)

1-110 RS/6000 SP MAPs


003 (continued)Was mode originally in SERVICE position as noted in previous step?Yes No

004

– Customer may have tried to reset processor node in SECURE mode. Reset will only takeeffect in NORMAL or SERVICE modes.


005

– Problem with reset.– Go to Step 012 on page 1-112

006

– No problem found– Inform customer that the processor node will not reset if the mode switch is in the SECURE


007

– From the control workstation, issue reset from this processor node.Does the processor node reset?Yes No

008

– Problem with reset.– Go to Step 012 on page 1-112.

009

– Intermittent problem may be occurring.– Record the following:

� Node number

� Date / Time fault reported

� Type of fault reported.


010

– This is not a recurring failure.– Go to “MAP 0570: End of Call” on page 1-357.

011




011 (continued)– Reoccurrence of intermittent fault has been detected.– Treat this fault as a solid failure.– Go to Step 024 on page 1-113.

012


� Power-off processor node.� Power-on processor node.� Check 3-digit LEDs for LED sequence indicating IPL.


013


014


015


016


017


018

– From node front panel display, click on “TTY” button to open a TTY console.– From the TTY console:

� Select “Advanced Diagnostic Routines”� Select “System Verification”� Select “Base System”.



1-112 RS/6000 SP MAPs


018 (continued)Does this test indicate a failure?Yes No

019


020

Problem with reset.– Go to Step 024 to continue isolation.

021


022




023


024

Problem with reset or mode switch function.– From the control workstation, power off processor node.– Place processor node in service position.– Use the following prioritized table to continue service:




1 Cable N00-SV-PS39 to N00-PL-P39 1. Check for proper seating and opens/shorts. SeeTable 1-8 on page 1-114. If no problem is found,continue at Priority 2.


2 Cable N00-PL-P40 to N00-PC-P40and N00-PC-P41

1. Check for proper seating and opens/shorts. SeeTable 1-8 on page 1-114. If no problem is found,continue at Priority 3.


3 Wide Node Supervisor Card 1. Replace card.2. Perform "Verification Test for Supervisor Bus" in



4 I/O Planar Board 1. Replace board.2. Go to Step 025 on page 1-114 to verify fix.


Node supervisor card N00-NS-JS39 to I/O planar N00-PL-J39 cable check points:

Table 1-8. Cable Continuity Check Points

Signal From To

Reset N00-SV-PS39 pin A12 N00-PL-P39 pin 7

Service N00-SV-PS39 pin A13 N00-PL-P39 pin 3

Secure N00-SV-PS39 pin B12 N00-PL-P39 pin 2

025

Component has been repaired or replaced.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put the circuit breaker at the front of the processor node in the On (‘1’) position.– Go to Step 014 on page 1-112 to continue service.

026

No response from TTY console for a processor node.– Make sure processor node was IPLed in NORMAL mode.–

From system file server, telnet into this processor node:

telnet nodename

– Log in as “root”.– Have the customer check to make sure that the TTY port on the processor node is correctly defined.


smit console

1-114 RS/6000 SP MAPs



2. Check the TTY configuration by issuing the following command in the processor node's window:

smit tty



027


028

Problem due to hardware.– Close console TTY window (if already open).– Log into the node over the Ethernet:

telnet nodename



029


030


telnet nodename


chcons /dev/tty0– From the control workstation, make sure the node front panel display is open.– Close TTY console at this time.– Have the customer remove the processor node from the active system configuration and power off the





1 Cable N00-SV-PS37 to N00-PL-P37 1. Check for proper seating. If no problem found,continue at Priority 2.


2 Cable N00-PC-P40 to N00-PL-P40and N00-PL-P41

1. Check for proper seating. If no problem found,continue at Priority 3.







031


032

– Go to Step 030 on page 1-115 to service next highest priority component.

033




034


035

Problem resolved.(Step 035 continues)

1-116 RS/6000 SP MAPs



036

3-digit LED problem.– Have the customer remove the processor node from the active system configuration and power off the



1 Cable N00-SV-PS39 to N00-PL-P39 1. Check for proper seating. If no problem found,continue at Priority 2.


2 Cable N00-PC-P40 to N00-PL-P40and N00-PL-P41






4 I/O Planar Board 1. Replace board.2. Go to Step 037 to verify fix.


037

Component has been repaired or replaced.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– From the control workstation, power on this processor node.– From the control workstation, make sure the 3-digit LEDs for this processor node are displayed on the


038

– Go to Step 036 to service next highest priority component.

039


� Select “Advanced Diagnostic Routines”(Step 039 continues)



039 (continued)� Select “System Verification”� Select “Base System”


040


041


042

Yellow or green LED on processor node is not functioning.– Have the customer remove the processor node from the active system configuration and power off the

processor node.– Put the circuit breaker at the front of the processor node in the Off (‘0’) position.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures, ignoring PASS/FAIL results.– Check yellow and green LEDs at front and rear of processor to see if each LED lights at some point.Does each of the four LEDs light at any time?Yes No

043

– Place processor node in service position.– Repeat "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.– Check to see if same color LED is always Off in front and rear.Are LEDs of same color always Off in rear?Yes No

044

– Replace LED display card.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.Do both LEDs light at any time?Yes No

045


046

Problem resolved.– Go to Step 048 on page 1-119.

047

1-118 RS/6000 SP MAPs




048

All LEDs are operating.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to “MAP 0570: End of Call” on page 1-357.


MAP 0240: Wide Processor Node DC Short/Open

MAP 0240: Wide Processor Node dc Short/OpenNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

Problem in processor node power distribution detected by checking resistances of +4 V dc, +5 V dc, +12V dc, and/or -12 V dc to ground.– Based on the message, use the information in the table below to disconnect the appropriate cable and

check resistance between the cable pins.

Voltage CableFrom(positive lead)



+4 V N00-PC-P16A Pin 4 Pin 10 6 - 25

+5 VM N00-PC-P13A Pin 4 Pin 10 1K - 5M

+5 VI N00-PC-P40AN00-PC-P45N00-PC-P65

Pin 10Pin 4Pin 4

Pin 1Pin 3Pin 3

10 - 30100 - 500*100 - 500*

+12 V N00-PC-P40AN00-PC-P45N00-PC-P65

Pin 6Pin 1Pin 1

Pin 1Pin 2Pin 2

800 - 100K1K - 5K*1K - 5K*

−12 V N00-PC-P40A Pin 3 Pin 1 1K - 20K*

Note: *Resistance range assumes DASD(s) attached on this cable. With no DASD(s) attached, an open will bemeasured.

– The following table shows cable connections:

Connector Component

N00-PC-P16AN00-PC-P13A

CPU planar

N00-PC-P40A I/O planar

N00-PC-P45N00-PC-P65

DASD 3 / DASD 4DASD 1 / DASD 2

Was resistance below acceptable range?Yes No

002

Measured resistance is too high.– Check for one or more of the following conditions:

� Open in power cable.� Open in voltage distribution caused by a shorted component. Refer to list in Step 001 for

suspect component(s).

– Remove the suspect component(s) and inspect for damage. Also check the following list for othersuspect parts:

� Micro Channel adapter cards(Step 002 continues)

1-120 RS/6000 SP MAPs


002 (continued)

� Memory cards

– Replace any damaged components found during inspection.– Recheck resistance per Step 001 on page 1-120.Is resistance in the acceptable range?Yes No

003

– Replace the appropriate component from second table in Step 001 on page 1-120.– Go to Step 021 on page 1-123 to verify fix.

004


005

Measured resistance is too low.– Use the following table to continue service based on the cable connector where the short was detected:

006

Problem involves the CPU planar.– Clip multimeter leads to the connector pins for the voltage that shows resistance out of range.– Remove memory cards one-at-a-time until all components have been removed or resistance enters

acceptable range.Did removing memory cards make the short disappear?Yes No

007

– Replace the CPU planar.– Go to Step 021 on page 1-123 to verify fix.

008

Problem was in memory card(s).– Replace the memory card which is causing a short.– Go to Step 021 on page 1-123 to verify fix.

009


Connector Component Action

N00-PC-P16AN00-PC-P13A

CPU planar Go to Step 006.

N00-PC-P40A I/O planar Go to Step 009.

N00-PC-P45N00-PC-P65

DASD 3 / DASD 4DASD 1 / DASD 2




009 (continued)Problem involves I/O planar.Are there any Micro Channel slots empty?Yes No

010

Micro Channel specifications may be exceeded by card requirements.Has customer recently added or exchanged Micro Channel adapters?Yes No

011

– Go to Step 015.

012

– Remove the most recent adapter(s) from this processor node.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Power on processor node from control workstation.Does this fix the problem?Yes No

013

Problem still exists.– Go to Step 015.

014

This adapter was causing problem.– Call next level of support.

015

– If necessary, place processor node in service position.– Clip multimeter leads to the connector pins for the voltage that shows resistance out of range.– Remove Micro Channel adapter(s) one-at-a-time until all adapters have been removed or resistance

enters acceptable range.Did removing the Micro Channel adapter(s) make the short disappear?Yes No

016

– Replace the I/O planar.– Go to Step 021 on page 1-123 to verify fix.

017

Problem was in Micro Channel adapter(s).– Replace the adapter that was causing the short condition.– Go to Step 021 on page 1-123 to verify fix.

018


1-122 RS/6000 SP MAPs


018 (continued)Problem involves DASD(s).– Clip multimeter leads to the connector pins for the voltage that shows resistance out of range.– Unplug the DASD one-at-a-time until both DASD have been removed or resistance enters acceptable

range.Did removing the DASD(s) make the short disappear?Yes No

019

– Replace this DASD power cable: N00-PC-P45 or N00-PC-P65.– Go to Step 021 to verify fix.

020

– Replace the DASD that is causing the short condition.– Go to Step 021 to verify fix.

021

Part was replaced.– Recheck resistance per Step 001 on page 1-120.Is resistance in the acceptable range?Yes No

022

Problem not resolved.– Call next level of support.

023

Problem resolved.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breaker at front of processor node in the On (‘1’) position.– Go to “MAP 0570: End of Call” on page 1-357.


MAP 0250: 604 or 604e High Node Environment

MAP 0250: 604 or 604e High Node EnvironmentNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

Are any messages displayed?Yes No

002


003

TTY message indicates “rc.powerfail” or errpt -a | pg displays “Loss of Electric Power” associated withprocessor node.– Check failing node(s) error log by issuing errpt -a | pg on the affected node(s)' AIX window to check for

“Loss of Power” or warning messages.– Refer to "Power/Keylock Status Register (PKSR)" in RS/6000 SP: Maintenance Information, Volume 3

to decode power register bits.Does message indicate loss of power or power off?Yes No

004

Is the message a warning?Yes No

005


006


007

No immediate service required.– Maintenance can be done now by returning to Step 003, and treating the message as a

“Shutdown” or “Failure” message, or service can be deferred until a later date.

008


009



1-124 RS/6000 SP MAPs



Condition Action

Any power loss message Go to Step 010.

“...cooling problem...” or fan problem Go to Step 034 on page 1-128.

“...memory protect...” Go to Step 038 on page 1-129.

010

Power problem condition exists.– Check the node supervisor green LED 1.Is the node supervisor green LED 1 On?Yes No

011

– Go to “MAP 0260: 604 or 604e High Node Power” on page 1-130.

012

– Check the green LED for the node power supplies.Is the power supplies green LED Off?Yes No

013

– Check for airflow blockage and/or fan or cooling problems with the node.Do any of these problems exist?Yes No

014

– Verify that you have the correct processor node. Then go to “MAP 0130: Processor Node”on page 1-30.

015


016

– Go to Step 017

017

– Go to the appropriate removal and replacement procedure in "Power Supply and Cooling Units" inRS/6000 SP: Maintenance Information, Volume 3 depending on:

� If node N+1 power is present

� If node N+1 power is not present (place the high node in service position and replace the failingpower supply/cooling unit).




017 (continued)Is the power supplies green LED Off?Yes No

018


019

– Check for 48 volts present at the high node power supply cable end(s) P1 and P2 (if N_1 power ispresent), at the rear of node. Measure voltage between any one of: pin 1, pin 2, or pin 3 and any oneof: pin 7, pin 8, or pin 9.

Is the 48 volts missing?Yes No

020

– Problem with 48 volts sensing.– Go to Step 022.

021


022

Problem with 48 volts sensing.– From the control workstation, power off the processor node.– Place the processor node in the service position.–

Use the following prioritized table to continue service:


1 Node supervisor card 1. Replace card

2. Go to Step 023 on page 1-127

2 SIB card 1. Replace card


3 IOD card 1. Replace card


4 Lateral planar 1 card 1. Replace card


5 Media module/operator panel cable 1. Replace cable


6 CPU planar 1. Replace planar


7 I/O planar 1. Replace planar



1-126 RS/6000 SP MAPs


023

– Remove processor node from service position.– From the control workstation, power on the processor node.Is the power supplies green LED off?Yes No

024


025

Go to Step 022 on page 1-126 and replace the next highest priority component.

026

Problem with 48 volts supplied to power supply.– If node N+1 power is present, notify the customer that the 604 or 604e high node must be powered off

before continuing.– If node N+1 power is not present, continue.– Place the 604 or 604e high node into service position. Replace the high node power supply cable.

Refer to "Replacing the 604 or 604e High Node Power Supply Cable (at CBJ2)" at IBM RS/6000 SP:Maintenance Information, Volume 3, Locations and Service Procedures.

– Replace the 604 or 604e high node from the service position.Is the power supplies green LED Off?Yes No

027


028

– Place the 604 or 604e high node in service position, and replace the high node circuit breaker corre-sponding to the power supply. Refer to "Replacing the 604 or 604e High Node Circuit Breaker" in IBMRS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures.

– Replace the 604 or 604e high node from the service position.Is the power supplies green LED Off?Yes No

029


030

– Place the 604 or 604e high node in service position, and replace the high node power cable. Refer to"Replacing the 604 or 604e High Node Power Cable (at CBJ1)" in IBM RS/6000 SP: Maintenance Infor-mation, Volume 3, Locations and Service Procedures.

– Replace the 604 or 604e high node from the service position.(Step 030 continues)



030 (continued)Is the power supplies green LED Off?Yes No

031

– Go to Step 033.

032

– Go to “MAP 0430: dc Power Loss from Bulk dc Power Supply(s)” on page 1-250

033

– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breakers at front of processor node in On (‘1’) position.– Go to “MAP 0570: End of Call” on page 1-357.

034

“...cooling problem...” or fan problem condition exists.– Place processor node in service position.– Use the following table to reseat or replace components:


1 Fan 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10

Note: See Figure 1-11 onpage 1-44.

1. Check specified fan for blockage or loose cableconnection. Refer to "Power/Keylock Status Reg-ister (PKSR)" in RS/6000 SP: Maintenance Infor-mation, Volume 3 to decode power register bits.



2 Fan 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10


1. Replace fan and/or cooling module as described in"FRU Removals and Replacements" in IBMRS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures. Refer to"Power/Keylock Status Register (PKSR)" inRS/6000 SP: Maintenance Information, Volume 3to decode power register bits.

2. Fix any obvious problem(s).


3 Lateral planar 1 card 1. Replace card.


4 SIB card 1. Replace card.


5 Lateral planar 2 card 1. Replace card.


6 Fan cable 1. Replace cable.



1-128 RS/6000 SP MAPs


035

Component replaced or reseated.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Put circuit breakers at the front of processor node in the On (‘1’) position.– Check error log or SRN.Does the problem still exist?Yes No

036


037

– Put circuit breakers at the front of the processor node in the Off (‘0’) position.– Reinstall the previously removed component.– Go to Step 034 on page 1-128 to service next highest priority component.

038




039


040


041


042




MAP 0260: 604 or 604e High Node Power

MAP 0260: 604 or 604e High Node PowerNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

– Check the node supervisor card green LED 1.Is the green LED 1 Off?Yes No

002

Processor node getting 48 V dc power.Is the green LED 1 flashing?Yes No

003

Green LED 1 is On, indicating no problem with power supply.– Verify that you have the proper processor node, then go to “MAP 0130: Processor Node”

on page 1-30.

004

Processor node is getting power.– Power on RS/6000 logic from the virtual front panel on the control workstation.Does green LED 1 light and stay lit?Yes No

005

– Check the node front panel cover to ensure that it is installed properly, depressing the inter-lock switch (white button).

Is front panel installed properly?Yes No

006

– Fix front panel.– Go to “MAP 0570: End of Call” on page 1-357.

007

– Go to “MAP 0280: 604 or 604e High Node Minimum Configuration” on page 1-145.

008


009

Processor node has problem with IPL.(Step 009 continues)

1-130 RS/6000 SP MAPs


009 (continued)– Go to “MAP 0130: Processor Node” on page 1-30.

010

No problem detected.– Record reason for power-off condition.– Go to “MAP 0570: End of Call” on page 1-357.

011

Check the node supervisor card yellow LED 5.Is the yellow LED 5 Off?Yes No

012

Base code loaded on node supervisor card.– Go to "Updating the Node Supervisor Code" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.– Go to Step 022 on page 1-132.

013

– Check the SIB green LED at the rear of the processor node.Is the SIB green LED Off?Yes No

014

– Go to MAP 0250: 604 or 604e High Node Environment Step 012 on page 1-125.

015

– Check circuit breakers at front of processor node. Put these circuit breakers in the On (‘1’) position ifthey are not already.

Do the circuit breakers go (trip) to the Off (‘0’) position?Yes No

016


017

– Place processor node in service position.– Check power harnesses at power supplies in the rear of the node, at the connection to the circuit

breakers, and at the 48-volt bulk power connections for any obvious problems which might cause ashort.

Does everything appear to be okay?Yes No

018

– Fix obvious problem(s). If necessary, replace node power harness.– Remove processor node from service position.(Step 018 continues)



018 (continued)– Reconnect all cables at rear of the processor node.– Go to Step 015 on page 1-131.

019

– Using a multimeter, check for a short between any pins in power supplies unit plug.Was a shorted condition detected?Yes No

020

– Using a multimeter, check for a short between any pins in node power plug(s).– Using a multimeter, check for a short between any tabs in circuit breaker(s).– If a short is detected, isolate it to either the cable or circuit breaker and replace the corresponding

part.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to Step 015 on page 1-131.

021

– Replace corresponding power supply.– Remove processor node from service position.– Reconnect all cables at rear of processor node.– Go to Step 015 on page 1-131.

022

– From control workstation or processor node, check green LED 1 for this node.Is green LED 1 off or is ‘No Power to Node’ displayed on the control workstation?Yes No

023


024


– Check the green LED 1 for an On or Flashing condition.– High processor nodes receive 48-volt power by connecting to four power plugs, possibly connecting to

two of the four power harnesses. The sets of processor nodes are as follows:

PDU-BH-P1: Processor nodes 1, 2, 3, 4PDU-BH-P2: Processor nodes 5, 6, 7, 8PDU-BH-P3: Processor nodes 9, 1ð, 11, 12PDU-BH-P4: Processor nodes 13, 14, 15, 16PDU-BH-P21: first SMP Node 1PDU-BH-P22: Second SMP Node 5PDU-BH-P23: Third SMP Node 9PDU-BH-P24: Fourth SMP Node 13


1-132 RS/6000 SP MAPs


024 (continued)Is the green LED 1 on any other processor node On or Flashing?Yes No

025


026

– Check all other processor nodes on the same dc power harness as the failing processor node to checkfor the same symptom - circuit breaker on but green LED 1 not lit.


027


028

– Check the cable connections at the power supplies, at the circuit breaker(s) behind CB panel below highnode (and at the four 48-volt power distribution connection).

Are there a good connection?Yes No

029


030

– Put circuit breakers CB01 and CB02 in the “on” (1) position.– Check for 48 volts present at the high node power supply cable end(s) P1 and P2 (if N+1 power is

present) in the rear of the node. Measure the voltage between either pin 1, pin 2, or pin 3 and either pin7, pin 8, or pin 9.

Is there 48 volts present at both P1 and P2?Yes No

031

Is 48 volts missing from both P1 and P2?Yes No

032


033

Voltage is not present at both P1 and P2.– Go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283.

034




034 (continued)48 volts distribution is getting to node.– Check power supply/cooling unit green LEDs and running fans.Are the power supply/cooling green LEDs On and are fans running?Yes No

035

– Go to MAP 0250: 604 or 604e High Node Environment Step 017 on page 1-125.

036


037

48 volts missing at either P1 or P2.– If P1: replace CB01.– If P2: replace CB02.Is voltage still missing at either P1 or P2?Yes No

038


039

– Replace high node power supply cable.Is voltage still missing at either P1 or P2?Yes No

040


041

– Go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283.

1-134 RS/6000 SP MAPs

MAP 0270: 604 or 604e High Node Control

MAP 0270: 604 or 604e High Node ControlAttention: If a 604 or 604e high node is present in this frame, it is possible that the 48 Volt power distrib-ution is spread across more than one power harness. Check physical connections from circuit breaker(s)to 48 V bulkhead connectors for actual power distribution.





001


Condition Action

� Problem with node power Go to “MAP 0250: 604 or 604e High NodeEnvironment” on page 1-124.

� 3-digit LEDs displayed but missing segments orremain blank



� Mode switch problem—problem setting NORMAL,SECURE, or SERVICE.

Go to Step 002.

� No response from TTY console � Close existing TTY window and open another.

� Go to Step 026 on page 1-139.


002



– From the control workstation, open the node front panel display.– Make note of the mode switch position for this processor node.– Set mode switch to something other than that recorded above.– If not already there, set the mode switch to SERVICE.(Step 002 continues)



002 (continued)



003

Problem not related to mode switch.Was mode originally in SERVICE position as noted in previous step?Yes No

004

Customer may have tried to reset processor node in SECURE mode. Reset will only takeeffect in NORMAL or SERVICE modes.– From the control workstation, reset this processor node.Does processor node reset?Yes No

005


006

No problem found.– Inform customer that the processor node will not reset if the mode switch is in the SECURE


007

– From the control workstation, issue reset for this processor node.Does processor node reset?Yes No

008


009


� Node number� Date / Time fault reported� Type of fault reported.

– Check logs to see if this fault has been previously recorded.(Step 009 continues)

1-136 RS/6000 SP MAPs


009 (continued)Is this a recurring fault?Yes No

010


011

Reoccurrence of intermittent fault has been detected.– Treat this fault as a solid failure.– Go to Step 024 on page 1-138.

012


� Shutdown and power-off processor node.� Power-on processor node.� Check 3-digit LEDs for LED sequence indicating IPL.


013


014


015


016


017


018





018 (continued)� Select “Advanced Diagnostic Routines”� Select “System Verification”� Select “Base System”.


Does this test indicate a failure?Yes No

019


020


021


022




023


024

Problem with reset or mode switch function.– From the control workstation, power off processor node.– Place processor node in service position.– Use the following prioritized table to continue service:

1-138 RS/6000 SP MAPs



1 Cable between frame supervisor andnode supervisor card

1. Check for proper seating and opens/shorts. If noproblem is found, continue at Priority 2.


2 Node supervisor card 1. Check for proper seating and opens/shorts. If noproblem is found, continue at Priority 3.


3 Cable between node supervisor andS1

1. Replace card.2. Perform "Verification Test for Supervisor Bus" in





025


026

No response from TTY console for a processor node.– Make sure processor node was IPLed in NORMAL mode.–

From system file server, telnet into this processor node:

telnet nodename



smit console



smit tty





026 (continued)Is the TTY port defined properly, and the console setup to use the TTY port?Yes No

027


028

Problem due to hardware.– Close console TTY window (if already open).– Log into the node over the Ethernet:

telnet nodename



029

– Run wrap diagnostics on S1 to node supervisor cable.Do diagnostics fail?Yes No

030

– Go to Step 034.

031

– Run wrap diagnostics on S1.Do diagnostics pass (no trouble found)?Yes No

032


033

– Go to Step 034.

034


telnet nodename


chcons /dev/tty0(Step 034 continues)

1-140 RS/6000 SP MAPs


034 (continued)– From the control workstation, make sure the node front panel display is open.– Close TTY console at this time.– Have the customer remove the processor node from the active system configuration and power off the




1. Replace cable.2. Perform "Verification Test for Supervisor Bus" in



2 Node supervisor card 1. Check for proper seating. If no problem found, con-tinue at Priority 3.


3 SIB card 1. Replace card.2. Perform "Verification Test for Supervisor Bus" in



4 Lateral planar 1 card 1. Replace card.2. Perform "Verification Test for Supervisor Bus" in



5 IOD card 1. Replace card.2. Perform "Verification Test for Supervisor Bus" in



6 Cables between frame supervisorand node supervisor card

1. Replace cable.2. Go to Step 035 to verify fix.


035

Component has been repaired or replaced.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– As processor node completes IPL, check the TTY console window.– From the control workstation node front panel display, put the processor node in SERVICE mode.– Put the circuit breaker at the front of the processor node in the On (‘1’) position.(Step 035 continues)



035 (continued)Do you get any data on the TTY console screen?Yes No

036


037




038


039


040

3-digit LED problem.– Have the customer remove the processor node from the active system configuration and power off the




1. Check for proper seating. If no problem found, con-tinue at Priority 2.





1. Replace card.2. Perform "Verification Test for Supervisor Bus" in





1-142 RS/6000 SP MAPs


041

Component has been repaired or replaced.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– From the control workstation, power on this processor node.– From the control workstation, make sure the 3-digit LEDs for this processor node are displayed on the


042


043




044


045


046

Yellow or green LED on node supervisor is not functioning.– Have the customer remove the processor node from the active system configuration and power off the

processor node.– Put the circuit breakers at the front of the processor node in the Off (‘0’) position.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures, ignoring PASS/FAIL results.– Check yellow and green LEDs on the node supervisor card to see if each LED lights at some point.Does each of the eight LEDs light at any time?Yes No

047


Volume 3, Locations and Service Procedures.– Check to see if same color LED is always Off in front and rear.(Step 047 continues)



047 (continued)Are LEDs of same color always Off in rear?Yes No

048



049

– Go to Step 051.

050

Problem resolved.– Go to Step 052.

051



052

All LEDs are operating.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to “MAP 0570: End of Call” on page 1-357.

1-144 RS/6000 SP MAPs

MAP 0280: 604 or 604e High Node Minimum Configuration

MAP 0280: 604 or 604e High Node Minimum ConfigurationAttention: After the lateral planar 2 card is installed and the system is powered-up, the system ID isdownloaded to the lateral planar 2 card from a backup source within the system. This ID becomes perma-nent on the lateral planar 2 and cannot be altered without special tools, Therefore, the lateral planar 2cannot be transferred to another system. It must be returned to the plant of manufacture as a new defec-tive part.

Attention: Lateral planar 2 and SIB EEPROMs contain the SYSID of the system. When one of the twocomponents is to be replaced (for example the lateral planar 2), the SYSID information is copied from SIBEEPROM into the lateral planar 2 EEPROM when you start the system.

To avoid losing this information, it is not possible to replace both components at the same time. Whenboth components are to be replaced, proceed as follows:

1. First substitute the SIB and start up the system: the SYSID information is copied from lateral planar 2EEPROM to the SIB EEPROM.

2. Substitute the lateral planar 2 and start up the system: the SYSID information is copied from SIBEEPROM to the lateral planar 2 EEPROM.

This MAP is used to locate defective FRUs not found by normal diagnostics. For this procedure, diagnos-tics are run on a minimum-configured system. If a failure is detected on the minimum-configured system,the remaining FRUs are exchanged one at a time until the failing one is identified. If a failure is notdetected, FRUs are added back until the failure occurs. The failure is then isolated to the failing FRU.

Notes:

1. The Graphical User Interface (GUI) Node Front Panel Layout may not release the serial port. It isnecessary to issue:

s1term -Gw Frame# Node# to take the serial port from the GUI and display the BUMP prompt andgain access to BUMP functions.

2. Ensure that all node 3-digit display summaries are up for the frame in which the node being servicedis located. This is the only reliable way to monitor for codes referenced in this MAP.

3. Install the memory cards in a right-to-left sequence beginning with slot A, and then continuing withslots B, C, and D. Memory cards must be installed with no empty slots between installed memorycards.

4. Install the CPU cards in a right-to-left sequence beginning with slot P, and then continuing with slotsQ, R, and S. CPU cards must be installed with no empty slots between installed CPU cards.

Attention: When you disconnect a SCSI cable from the DASD, it is possible that some of the datarequired to IPL the node will be unavailable. This can happen if a required filesystem is fully or partially onthe disconnected DASD. In this case, the node will only boot to a code in the range 517-518 or 551-557;consider this a successful IPL for purposes of this MAP only.

Although boot disk is typically set to hdisk0 (which is typically the disk located in the lower CPU chassisDASD tray) it is possible that some other disk is defined as the boot disk. You can check the boot disk forthis node using splstdata -b (then look at address jumpers on the disks). If possible, keep this boot diskin the configuration, even if it means physically moving the boot disk from the I/O expansion chassis to theCPU chassis.

The MAP steps instruct you to reduce the system to one or more of the following configurations:



Minimum Configurations for 604 and 604e High Nodes:

� Power distribution cable cluster, system planar (SP), I/O planars, I/O card (IOD), CPU module flexcables, I/O module flex cables, system interface board (SIB), one CPU card (CPU), one memorycard (MC), power supply (PS), lateral planar 1 card, lateral planar 2 card, and node supervisorassembly.

If no failure is detected, the maintenance menu is displayed. Any other response means one of theremaining FRUs is failing.

� Power distribution cable cluster, system planar (SP), I/O planars, I/O card (IOD), CPU module flexcables, I/O module flex cables, system interface board (SIB), one CPU card (CPU) and onememory card (MC), power supply (PS), SCSI adapter, lateral planar 1 card, lateral planar 2 card,and node supervisor assembly.

If no failure is detected, the Diagnostic Operating Instructions frame is displayed when the diagnos-tics are loaded, and the system console is selected. Any other response means one of theremaining FRUs is failing.

001

– Sometimes an SRN or BUMP Error Code will be logged in the BUMP Error Log. Before proceeding,check the BUMP Error Log for any SRNs or Error Codes. (See "Using the 604 or 604e High NodeBUMP Menus" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-dures for BUMP menu descriptions.) This is done as follows:

1. Power off2. From the GUI Node Front Panel Layout, set the physical key to the service position.3. Press Enter at the TTY console.

4. Type sbb 5. Press Enter

6. Select “Set Flags” (1)7. Enable the BUMP Console Present Flag, disable the Autoservice IPL flag.8. To exit, type x twice.

9. Power on10. When the Maintenance Menu appears, display the BUMP Error Log. (Scan all pages.)11. If an SRN is logged, record it and any location codes. Location Codes are separated by a blank.

Perform the listed action. An SRN will be preceded by ‘888 103’.12. If no SRN is logged, check for an Error Code. If an Error Code is logged, record it and any location

code. Location codes are separated by a blank. Perform the listed action. Look up the Error Codefor possible FRUs. See RS/6000 SP: Maintenance Information, Volume 3.

13. Perform the following:

– Ensure that the diagnostics and the operating system are shut down. At the Maintenance Menu, select5 and then hit ENTER.

– Ensure that the key position switch is in the Service Position.– Set the circuit breakers to the On (‘1’) position.– Ensure power supply cable(s) are connected to power supplies.– Perform service diagnostics from either hdisk0 or network boot.– Find the symptom in the following table that best matches the symptom on your system, and then

perform the associated task.

Note: Before verifying any condition indicated in the following steps of this MAP (e.g., a certain codedisplayed on the operator panel display), be sure that the system activity has stopped on thatcondition (same condition for more than 3 minutes).

1-146 RS/6000 SP MAPs


Information inOperator PanelDisplay Other Conditions Action

Blank Diagnostic Operating Screen is displayed. Go to Step 032 on page 1-153

Blank Maintenance Menu is displayed. Select System Boot, then Boot From List(disk or network boot). Wait for one of theother symptoms in this table to occur or ifthe Diagnostics do not load, go to Step 002on page 1-147

888 flashing Go to Step 002 on page 1-147

260 Main Menu is Displayed Select Exit Main Menu and Start System(Boot) then press Enter. When the StartingSystem Boot menu displays, press Enter.

Note: Repeat this procedure each timethese conditions occur.

269 flashing Go to Step 059 on page 1-158

269 (not flashing) Go to Step 056 on page 1-157

c31 Instructions to select the system consoleare displayed on the screen.

Follow the instructions on the screen. Waitfor one of the other symptoms in this tableto occur.

325 or less Digits are on solid for more than 3minutes, except for ‘165’ which maydisplay up to ten minutes with no activityon the BUMP console, and the Power lightis on.

Go to Step 002 on page 1-147

326 or greater Digits are on solid for more than 3minutes, and the power light is on.

Go to Step 019 on page 1-151

Any symptom not listed above. Go to Step 002 on page 1-147

002

– Set the circuit breakers to the Off (‘0’) position.– Record the slot numbers of the adapters. Label and record the location of any cables attached to the

adapters. Remove all the MCA adapters.– Record the slot numbers of the memory cards (MC), and then remove all the memory cards (MC),

except the one in slot A.– Record the slot numbers of the CPU cards (CPU) and then remove all the CPU cards (CPU), except the

one in slot P.– Set the circuit breakers to the On (‘1’) position.– Wait for one of the following conditions to occur:

� The Maintenance Menu is displayed.� The same three digit number is displayed in the operator panel display for longer than three minutes

except for the number ‘165’ which may display to ten minutes with no activity on the BUMP console.� The number ‘888’ or ‘---’ is in the operator panel display.




002 (continued)Is the maintenance menu displayed?Yes No

003

One of the FRUs remaining in the CPU Enclosure is defective.– To test each FRU, exchange the FRUs that have not already been exchanged in the following

order:

1. I/O card (IOD)2. CPU card (CPU)3. Memory card (MC)4. System planar (SP)

5. I/O planars6. Power supply (PS)7. CPU module flex cables8. I/O module flex cables9. System interface board (SIB)

Note: Once this part is used, return to plant as a “new defective, broken seal”.

10. Lateral planar 1 card11. Lateral planar 2 card


12. Node supervisor card/supervisor interposer card13. Media power cable.

The system is working correctly if the maintenance menu is displayed. If this occurs, the last partyou exchanged is defective.

– Set the circuit breakers to the Off (‘0’) position.– Exchange one of the FRUs in the list.– Set the circuit breakers to the On (‘1’) position.Is the maintenance menu displayed?Yes No

004

– Repeat Step 003 until the defective FRU is identified or all the FRUs have been exchanged.Did the symptom change?Yes No

005

– Call the next level of support.

006

– Check for loose cards, cables, and obvious problems. If you do not find a problem, return toStep 001 on page 1-146 and follow the instructions for the new symptom.

007

The last FRU you exchanged is the defective one.– Reinstall all the FRUs you have exchanged, except the last one and power on the system.(Step 007 continues)

1-148 RS/6000 SP MAPs



008

No failure was detected with this configuration.– Set the circuit breakers to the Off (‘0’) position.– Starting with the CPU cards, install one additional CPU card (CPU) or memory card (MC) (if any).– Set the circuit breakers to the On (‘1’) position.– Wait for one of the following conditions to occur:


except for the number ‘165’ which may display for up to ten minutes with no activity on the BUMPconsole.

� The number ‘888’ or ‘---’ is in the operator panel display.

Is the maintenance menu displayed?Yes No

009

– Go to Step 011.

010

– Repeat Step 008 until all CPU cards (CPU) and all memory cards (MC) are installed and tested.– After all CPU cards (CPU) and all memory cards (MC) are installed and tested, set the circuit breakers

to the Off (‘0’) position.– Install the SCSI adapter.– Connect the SCSI cable from the SCSI adapter to the SCSI connector.– Go to Step 020 on page 1-151

011

The failure may be caused by the last CPU card (CPU) or memory card (MC) installed.– Set the circuit breakers to the Off (‘0’) position.– Exchange the last card installed (CPU or memory).– Set the circuit breakers to the On (‘1’) position.– Wait for one of the following conditions to occur:





012


013





014

One of the FRUs remaining in the CPU Enclosure is defective.– To test each FRU, exchange the FRUs in the following order:

1. System planar (SP)2. I/O card (IOD)3. CPU cards (CPU)4. Memory cards (MC)

5. I/O planars6. CPU module flex cables7. I/O module flex cables8. System interface board (SIB)


9. Node supervisor card assembly10. Lateral planar 1 card11. Lateral planar 2 card


– Set the circuit breakers to the Off (‘0’) position.– Exchange one of the FRUs in the list.– Set the circuit breakers to the On (‘1’) position.– Wait for one of the following conditions to occur:





015

– Reinstall the original FRU.– Repeat Step 014 until the defective FRU is identified or all the FRUs have been exchanged.Did the symptom change?Yes No

016


017

– Check for loose cards, cables, and obvious problems. If you do not find a problem, return to Step001 on page 1-146 and follow the instructions for the new symptom.

018


1-150 RS/6000 SP MAPs



019


adapters.– Go to Step 020.

020

– EITHER leave in the SCSI adapter and remove all DASD except the boot disk OR leave in theEthernet adapter for a net boot diag and remove the SCSI adapter. (See the media drawer diagram in"Removing the 604 or 604e High Node DASD" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures.)

– Set the circuit breakers to the On (‘1’) position.– If the Maintenance Menu is displayed, select System Boot, then Boot From List.– Wait for one of the following conditions to occur:

� The system stops with a flashing or solid ‘269’ displayed in the operator panel display.� The system stops with ‘c31’ displayed in the operator panel display.� The same three digit number is displayed in the operator panel display for longer than three minutes



Is ‘Diagnostic Operating Screen’ or ‘c31’ displayed in the operator panel display?Yes No

021

One of the FRUs remaining in the CPU Enclosure is defective.– In the following order, exchange the FRUs that have not been exchanged:

1. SCSI adapter 2. Hdisk0 3. SCSI cable

4. Disk 1, Disk 4 receiver card5. Disk 2, Disk 3 receiver card

6. Inter-receiver cable7. I/O card (IOD)

8. I/O planars9. CPU module flex cables

10. I/O module flex cables11. System planar (SP)12. System interface board (SIB)13. Power distribution cable cluster14. CPU cards (CPU) (one at a time)15. Memory cards (MC) (one at a time)16. Power supply (PS)

– Repeat Step 019 until the defective FRU is identified or all the FRUs have been exchanged.(Step 021 continues)



021 (continued)Did the symptom change?Yes No

022


023


024

The system is working correctly with this configuration. One of the adapters that you removed is probablydefective.– Set the circuit breakers to the Off (‘0’) position.– Install one adapter, and connect any cables and devices that were attached to it.– Set the circuit breakers to the On (‘1’) position.– Start the diag boot from hdisk0 or net boot.– If the Maintenance Menu is displayed, select System Boot, then Boot From List.– Wait for one of the following conditions to occur:

� The system stops with ‘c31’ displayed in the operator panel display.� The system stops with a flashing or solid ‘269’ displayed in the operator panel display.� The same three digit number is displayed in the operator panel display for longer than three minutes




025

– Go to Step 027.

026

– Repeat Step 024 until all of the adapters are installed.– Go to “MAP 0570: End of Call” on page 1-357.

027

– Set the circuit breakers to the Off (‘0’) position.– Starting with the last installed adapter, disconnect one attached device and cable.– Set the circuit breakers to the On (‘1’) position.– If the Maintenance Menu is displayed, select System Boot, then Boot From List.– Wait for one of the following conditions to occur:




1-152 RS/6000 SP MAPs


027 (continued)� The number ‘888’ or ‘---’ is in the operator panel display.


028

– Repeat Step 019 on page 1-151 until the defective device is identified or all the devices andcables have been exchanged.

– If all the devices and cables have been removed then, one of the FRUs remaining in the CPUEnclosure is defective. To test each FRU, exchange the FRUs in the following order:

� Adapter (last one installed)� I/O card (IOD)

� I/O planars� CPU module flex cables� I/O module flex cables� System interface board (SIB)� Power supply (PS)

Did the symptom change?Yes No

029


030


031

The last device or cable you disconnected is defective.– Exchange the defective device or cable.– Go to “MAP 0570: End of Call” on page 1-357.

032


adapters. Remove all the MCA adapters except the one that is attached to hdisk0 that you will IPL fromand the one that your console is attached to.

Note: Leave serial adapter cable and supervisor adapter cable attached.

– Set the circuit breakers to the On (‘1’) position.– Perform service diagnostics from either hdisk0 or network book.– If the Maintenance Menu is displayed, select System Boot, then Boot From List.– Wait for one of the following conditions to occur:






032 (continued)� The number ‘888’ or ‘---’ is in the operator panel display.


033

The symptom has changed.– Check for loose cards, cables, and obvious problems. If you do not find a problem, return to Step

001 on page 1-146 and follow the instructions for the new symptom.

034

– Follow the instructions on the display to select your console.– When the Diagnostics Operating Instructions display, press the Enter key.– If the terminal type has not been defined or you are IPLing from diag net boot, you must use the Ini-

tialize Terminal option on the FUNCTION SELECTION menu to initialize the AIX operating system envi-ronment before you can continue with the diagnostics. This is a separate and different operation thanselecting the console display.

– Select Advanced Diagnostics Routines.– When the DIAGNOSTIC MODE SELECTION menu displays, select System Verification.– Run the diagnostics for each of the adapters and devices on the test list.Did you get an SRN?Yes No

035

One of the adapters or devices you removed is causing the problem.– Install the adapters and devices one at a time to determine the failing adapter or device. Test the

system after each adapter or device is installed.– Go to “MAP 0570: End of Call” on page 1-357.

036

– Look at the FRU part numbers associated with the SRN.Have you exchanged all the FRUs that correspond to the failing function codes?Yes No

037

– Exchange the FRU with the highest failure percentage that has not been changed.– Repeat Step 036 until all the FRUs associated with the SRN have been replaced or System

Checkout runs with no trouble found. Run System Checkout after each FRU is exchanged.– If System Checkout runs without error, go to “MAP 0570: End of Call” on page 1-357.

038


039

– Set the circuit breakers to the Off (‘0’) position.– Record the location of all the internal SCSI devices attached to the SCSI bus you are attempting to IPL

from.(Step 039 continues)

1-154 RS/6000 SP MAPs


039 (continued)– Remove all devices except the read boot disk (hdisk0).– Set the circuit breakers to the On (‘1’) position.– If the Maintenance Menu is displayed, select System Boot, Boot From List.– If the system stops with a ‘260’ displayed, and the Main Menu is displayed, Select Exit Main Menu and

Start System (Boot) and press Enter. When the “Starting System Boot” menu displays, press Enter.Repeat this procedure each time these conditions occur.

– Wait for one of the following conditions to occur:

� The system stops with a flashing or solid ‘269’ displayed in the operator panel display.� The system stops with ‘c31’ displayed in the operator panel display.


040

One of the FRUs remaining in the CPU Enclosure is defective.– Go to Step 042.

041


042

– This problem can be caused by:

� The disk pulling the bus down on the SCSI adapter� A defective SCSI adapter� A defective terminator� A defective SIB� A defective cable

– Set the circuit breakers to the Off (‘0’) position.– Remove the hdisk0.– Perform service diagnostics from network boot. This will normally be hdisk0.– Set the circuit breakers to the On (‘1’) position.– If the Maintenance Menu is displayed, select System Boot, then Boot From List.– If the system stops with a ‘260’ displayed, and the Main Menu is displayed, Select Exit Main Menu and





043

One of the FRUs remaining in the CPU Enclosure is defective.– Go to Step 045 on page 1-156.

044




044 (continued)– Replace the hdisk0.– Go to “MAP 0570: End of Call” on page 1-357.

045

– In the following order, exchange the FRUs that have not been exchanged:

� SCSI adapter� Hdisk0 (if still in the system).� System interface board (SIB)

� SCSI cable

– After each exchange, try performing service diagnostics from network boot to determine if the FRU fixedthe problem.

Were you able to identify the failing FRU?Yes No

046

One of the FRUs remaining in the CPU Enclosure is defective.– Go to Step 048.

047

– Replace the failing FRU.– Go to “MAP 0570: End of Call” on page 1-357.

048


adapters.– Remove all the adapters from the I/O module except the SCSI.– Remove all devices except the diag net boot disk.– Set the circuit breakers to the On (‘1’) position.– If the Maintenance Menu is displayed, select System Boot, then Boot From List.– If the system stops with a ‘260’ displayed, and the Main Menu is displayed, Select Exit Main Menu and





049

One of the FRUs remaining in the CPU Enclosure is defective.– In the following order, exchange the FRUs that have not been exchanged:

1. I/O card (IOD)2. I/O planars (MCA planars)3. CPU module flex cables


1-156 RS/6000 SP MAPs


049 (continued)4. I/O module flex cables5. System planar (SP)6. System interface board (SIB)7. CPU cards (CPU) (one at a time)8. Memory cards (MC) (one at a time)

– Repeat Step 048 on page 1-156 until the defective FRU is identified or all the FRUs have beenexchanged.

Did the symptom change?Yes No

050


051


052


053

The system is working correctly with this configuration. One of the devices that you removed is probablydefective.– Set the circuit breakers to the Off (‘0’) position.– Install a device.– Set the circuit breakers to the On (‘1’) position.– If the Maintenance Menu is displayed, select System Boot, Boot From List.– If the system stops with a ‘260’ displayed, and the Main Menu is displayed, Select Exit Main Menu and




Is ‘c31’ displayed in the operator panel display?Yes No

054

The last device inserted is defective.– Exchange the defective device or cable.– Go to “MAP 0570: End of Call” on page 1-357.

055

– Repeat Step 053 until all of the devices are installed.

056




056 (continued)– This problem can be caused by:

� A SCSI device pulling the bus down or opening the PTC on the SCSI adapter.� A defective SCSI adapter� A defective terminator� A defective system interface board (SIB)� A defective cable

The most likely problem is the SCSI adapter or a device pulling the bus down– Set the circuit breakers to the Off (‘0’) position.– Remove all SCSI Adapters except the one you are trying to boot from.– Set the circuit breakers to the On (‘1’) position.– If the Maintenance Menu is displayed, select System Boot, Boot From List.– Wait for one of the following conditions to occur:

� The system stops with a flashing or solid ‘269’ displayed in the operator panel display.� The DIAGNOSTIC OPERATING INSTRUCTIONS screen is displayed.

– If the system stops with a ‘c31’ in the operator panel display, follow the instructions on the display toselect your console.

Is a flashing or solid ‘269’ displayed in the operator panel display?Yes No

057

If the DIAGNOSTIC OPERATING INSTRUCTIONS screen is displayed, the system is working cor-rectly. It means that one of the SCSI adapters you removed was defective.– Reinstall the SCSI adapters one by one until you find the defective one.– Go to “MAP 0570: End of Call” on page 1-357.– If you have a different symptom, go to Step 001 on page 1-146 and follow the instructions for the

new symptom.

058


059

A message should be displayed with the flashing ‘269’.– Find the message in the following table and do the listed action.

060

– In the following order, exchange the FRUs that have not been exchanged:

1. SCSI adapter 2. I/O Planar


Message Displayed Action

269 - NO BOOTABLE Go to Step 060.

269 - NO DEVICE Go to Step 039 on page 1-154.

269 - NO DEV TYPE Go to Step 063 on page 1-159.

1-158 RS/6000 SP MAPs


060 (continued) 3. I/O Card 4. Flex Cable

– After each exchange, try performing service diagnostics from network boot to determine if the FRU fixedthe problem.

Were you able to identify the failing FRU?Yes No

061


062

– Replace the failing FRU.– Go to “MAP 0570: End of Call” on page 1-357.

063

– Exchange the hdisk0.– Try performing service diagnostics from network boot to determine if the FRU fixed the problem.Were you able to identify hdisk0 as the failing FRU?Yes No

064


065

– Replace the hdisk0.– Go to “MAP 0570: End of Call” on page 1-357.


MAP 0290: 332 MHz SMP Node Environment

MAP 0290: 332 MHz SMP Node EnvironmentNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001


002


003


“Loss of Power” or warning messages.Does message indicate loss of power or power off?Yes No

004


005


006


007

No immediate service required.– Maintenance can be done now by returning to Step 009, and treating the warning message

as a “Shutdown” or “Failure” message, or service can be deferred until a later date.

008


009




1-160 RS/6000 SP MAPs


009 (continued)– Based on the text of the message, use the following table to continue service:

Condition Action




010

Power problem condition exists.– Check the node supervisor green LED 1.Is the node supervisor green LED 1 On or flashing?Yes No

011

LED 1 is Off.– Go to “MAP 0300: 332 MHz SMP Node Power” on page 1-169.

012

Is the node supervisor green LED 1 On (but not flashing)?Yes No

013

LED 1 is flashing.– Go to Step 027 on page 1-163.

014

LED 1 is On.– Check the power supply green LED(s).Is the power supply green LED(s) On?Yes No

015

Verify the CB(s) is in the On position.Is the CB(s) in the On position?Yes No

016

Set the CB(s) to the On position.– Go to Step 010.

017

Verify the 48 V input cable(s) is plugged in the rear of the node.(Step 017 continues)



017 (continued)Is the 48 V power supply cable plugged properly?Yes No

018

Attention: Some 48-volt power cables have in-line circuit breakers. Ensure the in-line circuitbreaker switch is in the Off (O) position before connecting or disconnecting 48-volt powercables from the node.

Connect the 48 V input cable(s) properly.– Go to Step 010 on page 1-161.

019

Attention: Some 48-volt power cables have in-line circuit breakers. Ensure the in-line circuit breakerswitch is in the Off (O) position before connecting or disconnecting 48-volt power cables from thenode.

Check for 48 volts present at the 332 MHz SMP processor node end of the input cable(s). Measurebetween the voltage and the return pins.Is there 48 volts present at the connector(s)?Yes No

020


021

Problem with 48 volts sensing.– Go to Step 044 on page 1-164

022

Is the CPU power assembly green LED On (but not flashing)?Yes No

023


024

The green LED is On.– Check for airflow blockage and/or fan or cooling problems with the node.Do any of these problems exist?Yes No

025

– Verify that you have the correct processor node. Then go to “MAP 0130: Processor Node” onpage 1-30.

026


1-162 RS/6000 SP MAPs


026 (continued)– Go to Step 056 on page 1-166.

027

Is this a wide node (I/O expansion assembly attached and no supervisor card in left side)?Yes No

028


029

Is the I/O power assembly green LED on or flashing?Yes No

030


031

Is the I/O power assembly green LED on (not flashing)?Yes No

032

Check CPU and I/O power assembly yellow LEDs.Are the yellow LEDs on or flashing?Yes No

033

– Go to “MAP 0130: Processor Node” on page 1-30.

034

Are the yellow LEDs flashing?Yes No

035

– Go to “MAP 0110: Supervisor Subsystem” on page 1-10.

036

Go to Step 038.

037


038




038 (continued)Are supervisor LEDs #3 and/or #4 flashing?Yes No

039


040

–


041

– Remove processor node from service position.– From the control workstation, power on the processor node.Are supervisor LEDs #3 and/or #4 flashing?Yes No

042


043


044




1 Interposer connector cable 1. Replace cable

2. Go to Step 041

2 interposer connector card 1. Replace card

2. Go to Step 041

3 CPU or I/O power assembly 1. Replace assembly

2. Go to Step 041

4 CPU I/O planar 1. Replace I/O planar

2. Go to Step 041


1-164 RS/6000 SP MAPs


045

– Remove processor node from service position.– From the control workstation, power on the processor node.Is the power supplies green LED off or flashing?Yes No

046


047


048

Problem with 48 volts supplied to power supply.– Place the 332 MHz SMP node into service position. Replace the node supervisor card. Refer to

"Replacing the Node Supervisor Card" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures.

– Replace the 332 MHz SMP node from the service position.Is the power supplies green LED Off or flashing?Yes No

049


050

– Place the 332 MHz SMP node in service position, and replace the power/supervisor cable assembly.Refer to "Replacing the Power/Supervisor Cable Assembly" in IBM RS/6000 SP: Maintenance Informa-tion, Volume 3, Locations and Service Procedures.

– Replace the 332 MHz SMP node from the service position.(Step 050 continues)


1 Service processor card 1. Replace card


2 I/O expansion control cable 1. Replace cable assembly






5 Power or power/supervisor cableassembly

1. Replace assembly





050 (continued)Is the power supplies green LED Off or flashing?Yes No

051

– Go to Step 055.

052

– Place the 332 MHz SMP node in service position, and replace the front assembly FRU. Refer to"Replacing the CPU and I/O Expansion Power Assemblies" in IBM RS/6000 SP: Maintenance Informa-tion, Volume 3, Locations and Service Procedures.

– Replace the 332 MHz SMP node from the service position.Is the power supplies green LED Off or flashing?Yes No

053

– Go to Step 055.

054


055


056


1-166 RS/6000 SP MAPs



1 Fan 1, 2 (3, 4 if 332 MHz SMP widenode)





2 Fan 1, 2 (3, 4 if 332 MHz SMP widenode)





3 Front assembly FRU 1. Replace assembly


4 Power/supervisor cable assembly 1. Replace assembly



057


058


059


060







061


062


063


064



1-168 RS/6000 SP MAPs

MAP 0300: 332 MHz SMP Node Power

MAP 0300: 332 MHz SMP Node PowerNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

Ensure all circuit breakers for this node (power assembly and 48-volt in-line) are in the ON (‘1’) positionIs this a wide node (I/O expansion assembly attached and no supervisor card in left side)?Yes No

002

– Go to Step 008.

003

Are the I/O power assembly power interlock bar and tab engaged correctly?Yes No

004

– Reseat the I/O power assembly and ensure the power interlock bar and tab are engaged cor-rectly.

Have the problem symptoms changed?Yes No

005

– Go to Step 008.

006


007

– Go to Step 008.

008


009

Processor node getting 48 V dc power.Is the node supervisor green LED 1 flashing?Yes No

010


on page 1-30.



011


Ensure that the 48-volt power supply cable(s) is connected and the cable circuit breaker is in theON position.Is the node supervisor (green) LED #3 ON or flashing (also LED #4 if this is a wide node).Yes No

012


013


014

– Check the front assembly power interlock bar(s) and power interlock tab(s) are engagedproperly.

Are the power interlock bar(s) and tab(s) engaged properly?Yes No

015

Engage the front assembly power interlock bar(s) and power interlock tab(s).– Go to Step 027 on page 1-171.

016

Check for short conditions.– Go to “MAP 0320: 332 MHz SMP Node Minimum Configuration” on page 1-186.

017


018


019

No problem detected.– Record reason for power-off condition.(Step 019 continues)

1-170 RS/6000 SP MAPs



020


021

Is the power supplies yellow LED on or flashing?Yes No

022

Verify the CB is On.– Go to Step 030.

023

+48 V present.Is the power supplies green power LED flashing?Yes No

024

Is the power supplies green LED on steady?Yes No

025

The LED is Off.– Exchange the power supply.

026


027

Switch the CB Off, then On.Did the green LED light and the node IPL?Yes No

028

– Go to MAP 0290: 332 MHz SMP Node Environment, Step 048 on page 1-165.

029


030




030 (continued)Is the CB switched On?Yes No

031

Set the CB to the On position.Did the CB switch on and stay on?Yes No

032

Did the CB trip?Yes No

033


034

Possible power supply problem or short condition.– Go to Step 043 on page 1-173.

035


036

Node 48 volts missing.– Go to MAP 0290: 332 MHz SMP Node Environment, Step 017 on page 1-161.

037


038



039

– Check the power supplies green LED.Is the power supplies green LED Off?Yes No

040


1-172 RS/6000 SP MAPs


041

– Check circuit breaker(s) at front of power supplies. Put these circuit breaker(s) in the On (‘1’) position ifthey are not already.


042


043

– Place processor node in service position.Attention: Some 48-volt power cables have in-line circuit breakers. Ensure the in-line circuit breakerswitch is in the Off (O) position before connecting or disconnecting 48-volt power cables from the node.

– Check the 48-volt bulk power harnesses at power supplies in the rear of the node, at the connection to

the circuit breakers, and at the 48-volt bulk power connections for any obvious problems which mightcause a short.


044

– Fix obvious problem(s).– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to Step 041.

045

– Using a multimeter, check for a short between the pins of the 48-volt input connector(s) (J8 at the rearof the node).

Was a shorted condition detected?Yes No

046

– Disconnect the 48-volt power cable(s) from the SEPBU bulkhead.– Using a multimeter, check for a short between pins in the 48-volt power cable(s).– Using a multimeter, check for a short between any pins in node power plug(s).– If a short is detected, replace the 48-volt power cable.– Using a multimeter, check for a short between any tabs in circuit breaker(s).– If a short is detected, isolate it to either the cable or circuit breaker and replace the corresponding

part.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to Step 041.

047

– Using a multimeter, check for a short between the pins of the power/supervisor connector at the rear ofthe front assembly.




047 (continued)Was a shorted condition detected?Yes No

048

– Replace the power/supervisor cable assembly in the logic part of the node.– Remove processor node from service position.– Reconnect all cables at rear of processor node.– Go to Step 041 on page 1-173.

049


050

– From control workstation or processor node, check node supervisor green LED 1 for this node.Is node supervisor green LED 1 off or is ‘No Power to Node’ displayed on the control workstation?Yes No

051


052


– Check the green LED 1 for an On or Flashing condition.– 332 MHz SMP processor nodes receive 48-volt power by connecting a power cable between the node

and the SEPBU bulkhead.


Is the green LED 1 on any other processor node On or Flashing?Yes No

053


054



1-174 RS/6000 SP MAPs


054 (continued)Is this the only processor node showing this symptom?Yes No

055


056

– Check the cable connections at the rear of the processor node and at the 48-volt power distributionconnection.

Is there a good connection?Yes No

057


058

– Put the circuit breakers in the 48-volt input cable in the “on” (1) position.– Check for 48 volts present at the 332 MHz SMP processor node end of the input cable(s). Measure

between the voltage and the return pins.Is there 48 volts present at the connector(s)?Yes No

059

Voltage is missing at the input cable(s).– Replace the 48-volt input cable(s).Is 48 volts still missing at the connector end?Yes No

060

– Go to Step 062.

061


062

48 volts distribution is getting to node.– Check power supply green LED(s) and running fans.Are the power supply green LED(s) On and fans running?Yes No

063


064





1-176 RS/6000 SP MAPs

MAP 0310: 332 MHz SMP Node Control

MAP 0310: 332 MHz SMP Node ControlAttention: If a 332 MHz SMP node is present in this frame, it is possible that the 48-volt power distrib-ution is spread across more than one power harness. Check physical connections from circuit breaker(s)to 48-volt bulkhead connectors for actual power distribution.





001


Condition Action

� Problem with node power Go to “MAP 0290: 332 MHz SMP Node Environment”on page 1-160.

� Node will not reset Go to Step 002.




002

Node will not reset.– Check with customer to make sure this processor node is not in the current active configuration. If


– From the control workstation, open the node front panel display.– Issue reset for this processor node.Does processor node reset?Yes No

003




004




005


006


007


� Shutdown and power-off processor node.� Power-on processor node.� Check LCDs for sequence indicating IPL.

Do the LCDs change?Yes No

008


009

Processor node is IPLing.Do LCDs eventually indicate completion of IPL sequence (i.e. blank or “uuu”)?Yes No

010

Processor node has problem IPLing.– Go to Step 008 on page 1-88 to continue service.

011



1-178 RS/6000 SP MAPs


011 (continued)� Select “System Verification”� Select “Base System”.


012


013


014

Node reset functioning properly.Was this a solid problem? (If the problem was cleared by power-on only, answer No.)Yes No

015




016


017

Problem with reset.– From the control workstation, power off processor node.– Place processor node in service position.– Use the following prioritized table to continue service:











018


019

No response from TTY console for a processor node.– From the system file server, telnet into this processor node:

telnet nodename



smit console



smit tty



020


021


1-180 RS/6000 SP MAPs


021 (continued)Problem due to hardware.– Close console TTY window (if already open).– Log into the node over the Ethernet:

telnet nodename



022


023

– Go to Step 027.

024


025


026

– Go to Step 027.

027


telnet nodename









2 I/O planar 1. Replace I/O planar.2. Perform "Verification Test for Supervisor Bus" in



3 Cables between frame supervisor andnode supervisor card

1. Replace cable.2. Go to Step 028 on page 1-182 to verify fix.


028


029


030




031


032


033


1-182 RS/6000 SP MAPs


033 (continued)LCD problem.– Have the customer remove the processor node from the active system configuration and power off the






2 Node supervisor card 1. Check for proper seating. If no problem found,continue at Priority 3.




034

Component has been repaired or replaced.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– From the control workstation, power on this processor node.– From the control workstation, make sure the LCDs for this processor node are displayed on the screen.– Check the LCDs for the IPL sequence.Do the LCDs indicate the IPL sequence?Yes No

035


036




037


038




038 (continued)Problem resolved.– Go to “MAP 0570: End of Call” on page 1-357.

039




040



041



042

– Go to Step 044.

043


044



045

All LEDs are operating.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.(Step 045 continues)

1-184 RS/6000 SP MAPs




MAP 0320: 332 MHz SMP Node Minimum Configuration

MAP 0320: 332 MHz SMP Node Minimum ConfigurationThis MAP is used to locate defective FRUs not found by normal diagnostics. For this procedure, diagnos-tics are run on a minimum-configured system. If a failure is detected on the minimum-configured system,the remaining FRUs are exchanged one at a time until the failing one is identified. If a failure is notdetected, FRUs are added back until the failure occurs. The failure is then isolated to the failing FRU.



Note: DASD logical volume problems can be alleviated by performing a netboot.

001

Check if this 332 MHz SMP node is a thin node or a wide node (thin node with an I/O expansion chassis.Is this a wide node?Yes No

002

The problem exists in the thin node.– Go to Step 012 on page 1-187 to test the thin node minimum configuration.

003

Split the thin node and I/O expansion assembly.– Shutdown the node, if possible.– Set the circuit breakers to the Off (‘0’) position.– Remove the PCI riser card assembly cable from J6 on the I/O planar.– Remove the I/O expansion control cable from J2 on the I/O planar.– Remove the DASD cable (4-drop) from the I/O expansion assembly DASD.– Unplug and reseat the node supervisor cable to recognize the new thin node configuration.– IPL the thin node.Does the node IPL properly?Yes No

004


005

Remove the following components in the I/O expansion chassis bringing it to the minimum configuration:

Record the slot numbers of the PCI adapters. Label and record the location of any cables attached to theadapters. Remove all the PCI adapters.


1-186 RS/6000 SP MAPs


005 (continued)– Reconnect the PCI riser card assembly cable to J6 on the I/O planar.– Reconnect the I/O expansion control cable to J2 on the I/O planar.– Reseat the node supervisor by unplugging, then plugging, the supervisor cable at the rear of the node.– Set the circuit breaker to the On (‘|’) position.Does the node IPL properly?Yes No

006

A problem exists in the I/O expansion chassis.– Go to Step 021 on page 1-189 to test the wide node minimum configuration.

007

Add the components removed in Step 005 on page 1-186, one at a time, and IPL the node.Does the node IPL properly?Yes No

008

Component failed.– Replace failing component and IPL the node.Does the node IPL properly?Yes No

009

Component failed.– Replace failing component.– Go to Step 008

010

Component is working correctly.– Go to Step 007 to add another component. If all components have been installed, go to “MAP

0570: End of Call” on page 1-357.

011

Component is working correctly.– Go to Step 007 to add another component. If all components have been installed, go to “MAP 0570:

End of Call” on page 1-357.

012

Remove the following components in the thin node bringing it to the minimum configuration:

Record the slot numbers of the PCI adapters. Label and record the location of any cables attached to theadapters. Remove all the PCI adapters.If necessary, remove the SPS MX adapter card from slot J9.Remove one memory card (if there are two).Remove the DIMMs from the remaining card except for the DIMMs in locations J1 and J2. (For 332 MHzSMP Node memory card - DIMM locations, refer to "Location Diagrams of the RS/6000 SP Components"in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures.)(Step 012 continues)



012 (continued)Remove CPU card 2 (slots J5/J6), if installed.Remove all DASD except for the boot DASD (hdisk0).

– Set the circuit breaker to the On (‘|’) position.– Reseat the node supervisor by unplugging, then plugging, the supervisor cable at the rear of the node.Does the node IPL properly?Yes No

013

Replace the following components, one at a time, and IPL the node.

Memory DIMMMemory cardCPU cardService processor cardBoot DASDDASD cable (2-drop or 4-drop)I/O planarSystem planarFlat ribbon power cable

Does the node IPL properly?Yes No

014

– Replace next component in list on Step 013.– If all components have been replaced, call next level of support.

015

Last component replaced was defective.– Go to Step 016.

016


017


018


019


1-188 RS/6000 SP MAPs


019 (continued)Component is working correctly.– Go to Step 016 on page 1-188 to add another component. If all components have been installed,

go to “MAP 0570: End of Call” on page 1-357.

020

Component is working correctly.– Go to Step 016 on page 1-188 to add another component. If all components have been installed, go to

“MAP 0570: End of Call” on page 1-357.

021

Run minimum configuration on the wide node (minimum configured I/O expansion chassis and a thin nodethat IPLs correctly).– Replace the I/O expansion control cable and IPL the node.Does the IPL fail?Yes No

022

Add components (removed in Step 005 on page 1-186), one at a time, in the following order andIPL the node:

PCI adapters (one at a time), if applicableReconnect the DASD cable (4-drop) to the front of the I/O expansion assembly DASD.DASD (one at a time), if applicable.

Did the node IPL properly?Yes No

023

Component failed.– Replace failed component and IPL.Did node IPL properly?Yes No

024

Component failed.– Replace failed component.– Go to Step 023.

025

– Go to Step 022.

026

Component working correctly.– Go to Step 022.– If all components are installed, go to “MAP 0570: End of Call” on page 1-357.

027




027 (continued)– Replace the PCI riser card assembly and IPL the node.Does the IPL fail?Yes No

028


029

– Replace the PCI expansion planar and IPL the node.Does the IPL fail?Yes No

030


031

Replace the interposer adapter cable.Does the IPL fail?Yes No

032


033

– Replace the interposer adapter card.Does the IPL fail?Yes No

034


035

Replace the power assembly.Does the IPL fail?Yes No

036


037


1-190 RS/6000 SP MAPs

MAP 0330: POWER3 SMP Thin and Wide Node Environment

MAP 0330: POWER3 SMP Thin and Wide Node EnvironmentNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001


002


003


“Loss of Power” or warning messages.Does message indicate loss of power or power off?Yes No

004


005


006


007

No immediate service required.– Maintenance can be done now by returning to Step 009, and treating the warning message

as a “Shutdown” or “Failure” message, or service can be deferred until a later date.

008


009






009 (continued)– Based on the text of the message, use the following table to continue service:

Condition Action




010

Power problem condition exists.– Check the node supervisor green LED 1.Is the node supervisor green LED 1 On or flashing?Yes No

011

LED 1 is Off.– Go to “MAP 0340: POWER3 SMP Thin and Wide Node Power” on page 1-200.

012

Is the node supervisor green LED 1 On (but not flashing)?Yes No

013

LED 1 is flashing.– Go to Step 027 on page 1-194.

014

LED 1 is On.– Check the power supply green LED(s).Is the power supply green LED(s) On?Yes No

015

Verify the CB(s) is in the On position.Is the CB(s) in the On position?Yes No

016

Set the CB(s) to the On position.– Go to Step 010.

017

Verify the 48 V input cable(s) is plugged in the rear of the node.(Step 017 continues)

1-192 RS/6000 SP MAPs


017 (continued)Is the 48 V power supply cable plugged properly?Yes No

018

Attention: Some 48-volt power cables have in-line circuit breakers. Ensure the in-line circuitbreaker switch is in the Off (O) position before connecting or disconnecting 48-volt powercables from the node.

Connect the 48 V input cable(s) properly.– Go to Step 010 on page 1-192.

019


Check for 48 volts present at the POWER3 SMP processor node end of the input cable(s). Measurebetween the voltage and the return pins.Is there 48 volts present at the connector(s)?Yes No

020


021

Problem with 48 volts sensing.– Go to Step 044 on page 1-195

022

Is the CPU power assembly green LED On (but not flashing)?Yes No

023


024

The green LED is On.– Check for airflow blockage and/or fan or cooling problems with the node.Do any of these problems exist?Yes No

025

– Verify that you have the correct processor node. Then go to “MAP 0130: Processor Node” onpage 1-30.

026





027

Is this a wide node (I/O expansion assembly attached and no supervisor card in left side)?Yes No

028


029

Is the I/O power assembly green LED on or flashing?Yes No

030


031

Is the I/O power assembly green LED on (not flashing)?Yes No

032

Check CPU and I/O power assembly yellow LEDs.Are the yellow LEDs on or flashing?Yes No

033


034

Are the yellow LEDs flashing?Yes No

035

– Go to “MAP 0110: Supervisor Subsystem” on page 1-10.

036

Go to Step 038.

037


038


1-194 RS/6000 SP MAPs


038 (continued)Are supervisor LEDs #3 and/or #4 flashing?Yes No

039


040

–


041

– Remove processor node from service position.– From the control workstation, power on the processor node.Are supervisor LEDs #3 and/or #4 flashing?Yes No

042


043


044




1 Interposer connector cable 1. Replace cable

2. Go to Step 041

2 interposer connector card 1. Replace card

2. Go to Step 041


2. Go to Step 041

4 CPU I/O planar 1. Replace I/O planar

2. Go to Step 041




045

– Remove processor node from service position.– From the control workstation, power on the processor node.Is the power supplies green LED off or flashing?Yes No

046


047


048

Problem with 48 volts supplied to power supply.– Place the POWER3 SMP node into service position. Replace the node supervisor card. Refer to

"Replacing the Node Supervisor Card" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures.

– Replace the POWER3 SMP node from the service position.Is the power supplies green LED Off or flashing?Yes No

049


050

– Place the POWER3 SMP node in service position, and replace the power/supervisor cable assembly.Refer to "Replacing the Power/Supervisor Cable Assembly" in IBM RS/6000 SP: Maintenance Informa-tion, Volume 3, Locations and Service Procedures.

– Replace the POWER3 SMP node from the service position.(Step 050 continues)


1 Service processor card 1. Replace card


2 I/O expansion control cable 1. Replace cable assembly






5 Power or power/supervisor cableassembly

1. Replace assembly



1-196 RS/6000 SP MAPs


050 (continued)Is the power supplies green LED Off or flashing?Yes No

051

– Go to Step 055.

052

– Place the POWER3 SMP node in service position, and replace the front assembly FRU. Refer to"Replacing the CPU and I/O Expansion Power Assemblies" in IBM RS/6000 SP: Maintenance Informa-tion, Volume 3, Locations and Service Procedures.

– Replace the POWER3 SMP node from the service position.Is the power supplies green LED Off or flashing?Yes No

053

– Go to Step 055.

054


055


056





1 Fan 1, 2 (3, 4 if POWER3 SMP widenode)





2 Fan 1, 2 (3, 4 if POWER3 SMP widenode)





3 Front assembly FRU 1. Replace assembly


4 Power/supervisor cable assembly 1. Replace assembly



057


058


059


060




1-198 RS/6000 SP MAPs



061


062


063


064




MAP 0340: POWER3 SMP Thin and Wide Node Power

MAP 0340: POWER3 SMP Thin and Wide Node PowerNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,


001

Ensure all circuit breakers for this node (power assembly and 48-volt in-line) are in the ON (‘1’) positionIs this a wide node (I/O expansion assembly attached and no supervisor card in left side)?Yes No

002

– Go to Step 008.

003

Are the I/O power assembly power interlock bar and tab engaged correctly?Yes No

004

– Reseat the I/O power assembly and ensure the power interlock bar and tab are engaged cor-rectly.

Have the problem symptoms changed?Yes No

005

– Go to Step 008.

006


007

– Go to Step 008.

008


009

Processor node getting 48 V dc power.Is the node supervisor green LED 1 flashing?Yes No

010


on page 1-30.

1-200 RS/6000 SP MAPs


011


Ensure that the 48-volt power supply cable(s) is connected and the cable circuit breaker is in theON position.Is the node supervisor (green) LED #3 ON or flashing (also LED #4 if this is a wide node).Yes No

012


013


014

– Check the front assembly power interlock bar(s) and power interlock tab(s) are engagedproperly.

Are the power interlock bar(s) and tab(s) engaged properly?Yes No

015

Engage the front assembly power interlock bar(s) and power interlock tab(s).– Go to Step 027 on page 1-202.

016

Check for short conditions.– Go to “MAP 0360: POWER3 SMP Thin and Wide Node Minimum Configuration” on

page 1-217.

017


018


019

No problem detected.(Step 019 continues)



019 (continued)– Record reason for power-off condition.– Go to “MAP 0570: End of Call” on page 1-357.

020


021

Is the power supplies yellow LED on or flashing?Yes No

022

Verify the CB is On.– Go to Step 030.

023

+48 V present.Is the power supplies green power LED flashing?Yes No

024

Is the power supplies green LED on steady?Yes No

025

The LED is Off.– Exchange the power supply.

026


027

Switch the CB Off, then On.Did the green LED light and the node IPL?Yes No

028

– Go to MAP 0330: POWER3 SMP Thin and Wide Node Environment, Step 048 on page 1-196.

029


030


1-202 RS/6000 SP MAPs


030 (continued)Is the CB switched On?Yes No

031

Set the CB to the On position.Did the CB switch on and stay on?Yes No

032

Did the CB trip?Yes No

033


034

Possible power supply problem or short condition.– Go to Step 043 on page 1-204.

035


036

Node 48 volts missing.– Go to MAP 0330: POWER3 SMP Thin and Wide Node Environment, Step 017 on page 1-192.

037


038



039

– Check the power supplies green LED.Is the power supplies green LED Off?Yes No

040




041

– Check circuit breaker(s) at front of power supplies. Put these circuit breaker(s) in the On (‘1’) position ifthey are not already.


042


043

– Place processor node in service position.Attention: Some 48-volt power cables have in-line circuit breakers. Ensure the in-line circuit breakerswitch is in the Off (O) position before connecting or disconnecting 48-volt power cables from the node.

– Check the 48-volt bulk power harnesses at power supplies in the rear of the node, at the connection to

the circuit breakers, and at the 48-volt bulk power connections for any obvious problems which mightcause a short.


044

– Fix obvious problem(s).– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to Step 041.

045

– Using a multimeter, check for a short between the pins of the 48-volt input connector(s) (J8 at the rearof the node).

Was a shorted condition detected?Yes No

046

– Disconnect the 48-volt power cable(s) from the SEPBU bulkhead.– Using a multimeter, check for a short between pins in the 48-volt power cable(s).– Using a multimeter, check for a short between any pins in node power plug(s).– If a short is detected, replace the 48-volt power cable.– Using a multimeter, check for a short between any tabs in circuit breaker(s).– If a short is detected, isolate it to either the cable or circuit breaker and replace the corresponding

part.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– Go to Step 041.

047

– Using a multimeter, check for a short between the pins of the power/supervisor connector at the rear ofthe front assembly.


1-204 RS/6000 SP MAPs


047 (continued)Was a shorted condition detected?Yes No

048

– Replace the power/supervisor cable assembly in the logic part of the node.– Remove processor node from service position.– Reconnect all cables at rear of processor node.– Go to Step 041 on page 1-204.

049


050

– From control workstation or processor node, check node supervisor green LED 1 for this node.Is node supervisor green LED 1 off or is ‘No Power to Node’ displayed on the control workstation?Yes No

051


052


– Check the green LED 1 for an On or Flashing condition.– POWER3 SMP processor nodes receive 48-volt power by connecting a power cable between the node

and the SEPBU bulkhead.


Is the green LED 1 on any other processor node On or Flashing?Yes No

053


054





054 (continued)Is this the only processor node showing this symptom?Yes No

055


056

– Check the cable connections at the rear of the processor node and at the 48-volt power distributionconnection.

Is there a good connection?Yes No

057


058

– Put the circuit breakers in the 48-volt input cable in the “on” (1) position.– Check for 48 volts present at the POWER3 SMP processor node end of the input cable(s). Measure

between the voltage and the return pins.Is there 48 volts present at the connector(s)?Yes No

059

Voltage is missing at the input cable(s).– Replace the 48-volt input cable(s).Is 48 volts still missing at the connector end?Yes No

060

– Go to Step 062.

061


062

48 volts distribution is getting to node.– Check power supply green LED(s) and running fans.Are the power supply green LED(s) On and fans running?Yes No

063


064


1-206 RS/6000 SP MAPs




MAP 0350: POWER3 SMP Thin and Wide Node Control

MAP 0350: POWER3 SMP Thin and Wide Node ControlAttention: If a POWER3 SMP thin or wide node is present in this frame, it is possible that the 48-voltpower distribution is spread across more than one power harness. Check physical connections from circuitbreaker(s) to 48-volt bulkhead connectors for actual power distribution.





001


Condition Action

� Problem with node power Go to “MAP 0330: POWER3 SMP Thin and WideNode Environment” on page 1-191.

� Node will not reset Go to Step 002.




002

Node will not reset.– Check with customer to make sure this processor node is not in the current active configuration. If


– From the control workstation, open the node front panel display.– Issue reset for this processor node.Does processor node reset?Yes No

003


1-208 RS/6000 SP MAPs


004




005


006


007


� Shutdown and power-off processor node.� Power-on processor node.� Check LCDs for sequence indicating IPL.

Do the LCDs change?Yes No

008


009

Processor node is IPLing.Do LCDs eventually indicate completion of IPL sequence (i.e. blank or “uuu”)?Yes No

010

Processor node has problem IPLing.– Go to Step 008 on page 1-88 to continue service.

011





011 (continued)� Select “System Verification”� Select “Base System”.


012


013


014

Node reset functioning properly.Was this a solid problem? (If the problem was cleared by power-on only, answer No.)Yes No

015




016


017

Problem with reset.– From the control workstation, power off processor node.– Place processor node in service position.– Use the following prioritized table to continue service:

1-210 RS/6000 SP MAPs










018


019

No response from TTY console for a processor node.– From system file server, telnet into this processor node:

telnet nodename



smit console



smit tty



020


021




021 (continued)Problem due to hardware.– Close console TTY window (if already open).– Log into the node over the Ethernet:

telnet nodename



022


023

– Go to Step 027.

024


025


026

– Go to Step 027.

027


telnet nodename




1-212 RS/6000 SP MAPs





2 I/O planar 1. Replace I/O planar.2. Perform "Verification Test for Supervisor Bus" in

IBM RS/6000 SP: Maintenance Information, Volume3, Locations and Service Procedures.


3 Cables between frame supervisor andnode supervisor card

1. Replace cable.2. Go to Step 028 on page 1-213 to verify fix.


028


029


030




031


032


033




033 (continued)LCD problem.– Have the customer remove the processor node from the active system configuration and power off the






2 Node supervisor card 1. Check for proper seating. If no problem found,continue at Priority 3.




034

Component has been repaired or replaced.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.– From the control workstation, power on this processor node.– From the control workstation, make sure the LCDs for this processor node are displayed on the screen.– Check the LCDs for the IPL sequence.Do the LCDs indicate the IPL sequence?Yes No

035


036




037


038


1-214 RS/6000 SP MAPs


038 (continued)Problem resolved.– Go to “MAP 0570: End of Call” on page 1-357.

039




040



041



042

– Go to Step 044.

043


044



045

All LEDs are operating.– Remove processor node from service position.– Reconnect all cables at rear of the processor node.(Step 045 continues)




1-216 RS/6000 SP MAPs

MAP 0360: POWER3 SMP Thin and Wide Node Minimum Configuration

MAP 0360: POWER3 SMP Thin and Wide Node MinimumConfigurationThis MAP is used to locate defective FRUs not found by normal diagnostics. For this procedure, diagnos-tics are run on a minimum-configured system. If a failure is detected on the minimum-configured system,the remaining FRUs are exchanged one at a time until the failing one is identified. If a failure is notdetected, FRUs are added back until the failure occurs. The failure is then isolated to the failing FRU.



001

Check if this POWER3 SMP node is a thin node or a wide node (thin node with an I/O expansion chassis.Is this a wide node?Yes No

002


003

Split the thin node and I/O expansion assembly.– Shutdown the node.– Set the circuit breakers to the Off (‘0’) position.– Remove the I/O expansion control cable from J2 on the I/O planar.– Remove 4 screws that secure the CPU chassis to the I/O expansion chassis, then separate the chassis.– Remove the DASD cable (4-drop) from the I/O expansion assembly DASD.– Unplug and reseat the node supervisor cable to recognize the new thin node configuration.– IPL the thin node.Does the node IPL properly?Yes No

004


005

Remove the following components in the I/O expansion chassis bringing it to the minimum configuration:

Record the slot numbers of the PCI adapters. Label and record the location of any cables attached to theadapters. Remove all the PCI adapters.




005 (continued)– Reconnect the I/O expansion and CPU chassis, then secure the chassis with 4 screws.– Reconnect the I/O expansion control cable to J2 on the I/O planar.– Reseat the node supervisor by unplugging, then plugging, the supervisor cable at the rear of the node.– Set the circuit breaker to the On (‘|’) position.Does the node IPL properly?Yes No

006

A problem exists in the I/O expansion chassis.– Go to Step 021 on page 1-220 to test the wide node minimum configuration.

007


008


009


010

Component is working correctly.– Go to Step 007 to add another component. If all components have been installed, go to “MAP

0570: End of Call” on page 1-357.

011

Component is working correctly.– Go to Step 007 to add another component. If all components have been installed, go to “MAP 0570:

End of Call” on page 1-357.

012

Remove the following components, if they exist, in the thin node bringing it to the minimum configuration:– Record the slot numbers of the PCI adapters, label and record the location of any cables attached to

the adapters, then remove all the PCI adapters.– Remove the SPS MX2 adapter card from slot J9.– Remove one memory card (if there are two).– Remove the DIMMs from the remaining card except for the DIMMs in locations J1 and J2. (For

POWER3 SMP thin and wide node memory card - DIMM locations, refer to "Location Diagrams of theRS/6000 SP Components" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations andService Procedures.)


1-218 RS/6000 SP MAPs


012 (continued)– Remove CPU card 2, if installed.– Remove all DASD except for the boot DASD (hdisk0).– Reseat the node supervisor card.– Set the circuit breaker to the On (‘|’) position.Does the node IPL properly?Yes No

013

Replace the following components, one at a time, and IPL the node.

Memory DIMMMemory cardCPU cardService processor cardBoot DASDDASD cable (2-drop or 4-drop)I/O planarSystem planarFlat ribbon power cable

Does the node IPL properly?Yes No

014

– Replace next component in list on Step 013.– If all components have been replaced, call next level of support.

015

Last component replaced was defective.– Go to Step 016.

016


017


018


019




019 (continued)Component is working correctly.– Go to Step 016 on page 1-219 to add another component. If all components have been installed,

go to “MAP 0570: End of Call” on page 1-357.

020

Component is working correctly.– Go to Step 016 on page 1-219 to add another component. If all components have been installed, go to

“MAP 0570: End of Call” on page 1-357.

021

Run minimum configuration on the wide node (minimum configured I/O expansion chassis and a thin nodethat IPLs correctly).– Replace the I/O expansion control cable and IPL the node.Does the IPL fail?Yes No

022

Add components (removed in Step 005 on page 1-217), one at a time, in the following order andIPL the node:

PCI adapters (one at a time), if applicableReconnect the DASD cable (4-drop) to the front of the I/O expansion assembly DASD.DASD (one at a time), if applicable.

Did the node IPL properly?Yes No

023

Component failed.– Replace failed component and IPL.Did node IPL properly?Yes No

024

Component failed.– Replace failed component.– Go to Step 023.

025

– Go to Step 022.

026

Component working correctly.– Go to Step 022.– If all components are installed, go to “MAP 0570: End of Call” on page 1-357.

027


1-220 RS/6000 SP MAPs


027 (continued)– Replace the PCI expansion planar and IPL the node.Does the IPL fail?Yes No

028


029

Replace the interposer adapter cable.Does the IPL fail?Yes No

030


031

– Replace the interposer adapter card.Does the IPL fail?Yes No

032


033

Replace the power assembly.Does the IPL fail?Yes No

034


035



MAP 0370: Main Power

MAP 0370: Main PowerThe dc frame power is supplied by ac-dc power supplies in the base of each frame. There are two dif-ferent implementations of the frame power.

Power Distribution Unit (PDU):

� Used in SP1 and some SP2 systems� Converts 200-240 V ac to +12, +24, and +48 V dc� The +24 V dc supply is used to power an EPO contactor� The main power switch acts as EPO switch� Uses 4 bulk power supplies to provide N+1 +48 V dc power� Uses many discrete components for power conversion, distribution, and control functions� Requires external transformer for use with 380-415 V ac� Power for bulk supplies is controlled individually for each supply by the System Monitor.

J5J4J3J2J1

J7

J8

J9

32 GND

AC Line Filter Connections

Test Points on T op

LED J61

"A" Even & Switch

4

3

2

1

"B" Odd Nodes

+48 V to Nodes and HiPS 200-240 V ac Input To FrontPower Switch Asm.

Fra

me

Sup

ervi

sor

Con

nect

orC

ard

DC AC

48 V Ret. +48 V

1 32

Test Points

Figure 1-17. Rear View of Power Distribution Unit

Scalable Electrical Power Base Unit (SEPBU):

� Used in SP2 systems� Converts 200-240 V ac and 380-415 V ac to +12 and +48 V dc without manual intervention� Uses three bulk power modules to provide N+1, +12, and +48 V dc power� Uses power modules and power chassis backplane for power conversion, distribution, and control

functions� The LC8 has only one power module (in position D — see Figure 1-19 on page 1-223) and

optionally one additional power module in position C.� No external transformer required

1-222 RS/6000 SP MAPs


� Has no mainline circuit breaker (power modules contain individual circuit breakers)� Has quick disconnect ac power connector� The main power switch acts as EPO switch and also sends a signal to the PCI indicating that the

power switch is closed� Provides power control interface (PCI) function� All power modules are controlled with one power switch by the System Monitor.

LED

ACLine Cord

PC FSCH

Figure 1-18. Rear View of Scalable Electrical Power Base Unit

SP 49-Inch Frame Locations - Front View

(Air Filter Removed)

5

3

1

Processor NodeLEDs and CB

48 V PowerModules

DC (Optional)

ProcessorNode 7(Slot 7)

ProcessorNode 8(Slot 8)

Switch Assembly(Slot 17)

Figure 1-19. Front View of 49-Inch Frame Locations



Common to PDU and SEPBU:

� Provides supervisor +12 V dc power� Provides +48 V dc power for processor node(s) and/or switch assemblies (usually N+1 configura-

tion)� Houses frame supervisor for frame control/monitoring� Common connectors at bulkhead� The +48 V dc power can be controlled via frame supervisor.

DANGER

Both the SEPBU power chassis and the PDU 48 V power chassis are field replaceable units(FRUs) which contain NO serviceable parts; they are labeled as such. Do not attempt toisolate or repair these components, since doing so may result in severe injury or evendeath.

001

Problem detected concerning power in frame.

Attention: When servicing frame(s) in a parallel environment, powering off a frame will cause all paralleljobs to terminate. The switch network can not be re-initialized until power is restored to the frame, or theframe is removed from the active configuration in a multi-frame system. Refer to "Removing and RestoringSwitch Resources" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-dures, for these procedures.

Note: PDU is an acronym for Power Distribution Unit. SEPBU is an acronym for Scalable ElectricalPower Base Unit.

– Use the following table to continue service.

Frame Power Type Action

PDU Go to “MAP 0380: Power Distribution Unit (PDU)” on page 1-225.

SEPBU Go to “MAP 0460: Scalable Electrical Power Base Unit (SEPBU)” on page 1-265.

1-224 RS/6000 SP MAPs

MAP 0380: Power Distribution Unit (PDU)

MAP 0380: Power Distribution Unit (PDU)The 48 V dc power system consists of the following components:

� ac line cord� ac line filter� Main circuit breaker

� Contactor� 48 V Power chassis� Bulk dc power supplies

� Busbars� 48 V dc distribution cables

� Miscellaneous cables.

The supervisor 12/24 V dc power system consists of the following components:

� Supervisor 12 V dc power supply (S1)� Contactor main power switch 24 V dc power supply (S2)� PDU rear panel LED� Main power switch LED

� Connector card � Supervisor harnesses � Miscellaneous cables.

Refer to the following two figures:

� Figure 1-20 on page 1-226, for a view of the RS/6000 SP frame power diagram� Figure 1-21 on page 1-228, for a view of the ac wiring diagram for the RS/6000 SP power distribution

unit.



Sup

ervi

sor

BU

S "

B"

Odd

Nod

es

LED

s

(Yel

low

)

(Yel

low

)

(Gre

en)

(Gre

en)

Sup

ervi

sor

Bus

Act

ive

Line

Filt

er

S2

+24

VP

ower

S

uppl

y

S1

+12

VP

ower

S

uppl

y

Cus

tom

er20

0-24

0 A

C3

phas

eIn

put

PD

U

CB

LED

+24

V

PD

UR

ear

Fro

ntS

witc

hA

sm

CC

J6J1

SW

and

LED

PD

UC

onta

ctor

Fra

me

Sup

ervi

sor

Car

d

Fra

me

Con

nect

orC

ard

Pow

erC

ontr

ol

Sup

ervi

sor

Bus

Jum

per

Cab

les

RS

232

Act

ive

48 V

dc

N+

1P

ower

S

uppl

ies

+48

V

Nod

e 16

RIS

CI/O

Pla

nar

Con

trol

Sen

se

J7 J8

+48

V d

cS

ense

Sup

ervi

sor

BU

S "

A"

Eve

n N

odes

Nod

eP

ower

Sup

ervi

sor

Sw

itch

2 13

57

911

1315

46

810

1214

+12

V

LED

CB

+48

V S

tatu

s

+12

V P

ower

Back Plane

J202

J402

J403

J404

P2

P1

A B C D

J407

J406

J408

+12

v

+12

V

RS

232

Figure 1-20. RS/6000 SP PDU Power Diagram

001


1-226 RS/6000 SP MAPs


001 (continued)Problem detected concerning power in frame.

Attention: When servicing frame(s) in a parallel environment, powering off a frame will cause all paralleljobs to terminate. The switch network can not be re-initialized until power is restored to the frame, or theframe is removed from the active configuration in a multi-frame system. Refer to "Removing and RestoringSwitch Resources" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-dures, for these procedures.

Note: PDU is an acronym for Power Distribution Unit.

– Check the condition of the following LEDs:

� Main power switch LED

� PDU panel LED

� Frame supervisor LEDs.

– The following table contains a prioritized list of conditions.

Find the first condition that describes your problem, then perform the suggested action:

Note: The system monitor log can be viewed by issuing the following command:

errpt -a -N sphwlog | pg

on the control workstation.


1 Main power switch LED is Off-AND- PDU rear panel LED is Off-AND- Frame Supervisor LEDs are Off.

Go to “MAP 0390: Supervisor Power Problem” onpage 1-229.

2 Main power switch LED is On-OR- PDU rear panel LED is On,-BUT- all frame supervisor LEDs are Off.

Go to “MAP 0400: Supervisor Power 12 V dcProblem” on page 1-237.

3 Main power switch LED is On-AND- PDU rear panel LED is Off,-BUT- some frame supervisor LEDs are On.

Go to “MAP 0410: Supervisor Power 24 V dcProblem” on page 1-244.

4 Main power switch LED is Off. Go to “MAP 0420: Main Power Switch” onpage 1-247.

5 System monitor log reports “dc PowerLoss“ for any bulk dc power supplies.

Go to “MAP 0430: dc Power Loss from Bulk dcPower Supply(s)” on page 1-250.

6 Frame supervisor detecting problem:

� Frame supervisor green LED #2(dc OK) is flashing.

� Frame temperature is over 40° C.

Go to “MAP 0450: Frame Environment” onpage 1-262.

7 Problem with 48 V dc power distributionto processor node(s) or switch assem-blies.

Go to “MAP 0480: Open in 48 V dc Distribution” onpage 1-283.



AC

Plu

g

J8 (

to a

ll od

d no

des)

Rea

r LE

D

Mai

n P

ower

Sw

itch

48vD

C(t

o al

l nod

es v

ia J

1, J

2, J

3, J

4)(a

nd S

witc

h vi

a J5

)

J402

J406

J408

J403

J404

DC

Sup

plie

s C

& D

DC

Sup

plie

s A

& B

J407

48R

+48

v

Sup

ervi

sor

Con

nect

orC

ard

J7 (

to s

witc

h an

d al

l eve

n no

des)

01A

1

B1

C1

A2

L1 C1

R1

L2L1

T1

L2T

2

L3

A2-

A1+

T3

C2

R2

B2

C2

02 03

Test

Poi

nts

LF

Ble

eder

Res

isto

rV

S D

iode

AD

C(N

+1)

0102

03

Fro

nt L

ED

Dis

trib

utio

n B

us

+48

v

J6

48R

GN

D

DC

sup

plie

s A

, B, C

, D

12vD

C

0203

0302 24

vDC

+48

v48

R

CB

1C

C

Figure 1-21. Wiring Diagram of RS/6000 SP Power Distribution Unit

1-228 RS/6000 SP MAPs

MAP 0390: Supervisor Power Problem

MAP 0390: Supervisor Power ProblemProblem detected concerning power in system:

� Main power switch LED is Off� -AND- PDU rear panel LED is Off� -AND- Frame Supervisor LEDs are Off.

001

– Put main power switch in the Off (‘0’) position.

DANGER

High voltage present at test points. Use high voltage test probes.

– Using a multimeter, check ac phase-to-phase voltage between test points O1 and O2 on ac filter. Thevoltage should be in the range 180-254 V ac.

Is there an ac power problem, i.e., ac voltage not in range?Yes No

002


003

Problem with the power coming into the frame.– Put the RS/6000 SP main circuit breaker in the Off (‘0’) position.Is there a high-voltage transformer connected to this frame?Yes No

004

– Have customer put his wall circuit breaker in the On position.– Check the state of the customer circuit breaker.Does the customer circuit breaker stay in the On position?Yes No

005

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2or “Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary powerto the frame.

– With power removed, check for a short condition between ac phases using test points 01,02, and 03 on ac filter.

Do you detect a short condition?Yes No

006




007

– Isolate ac short between line filter and circuit breaker input using Figure 1-21 onpage 1-228 as a reference.

– Replace parts as required.– Go to Step 051 on page 1-236 to verify fix.

008

– Go to Step 010

009


010

– Repeat the ac voltage test from Step 001 on page 1-229.Is ac present and within 180-254 V ac?Yes No

011

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2 or“Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary power to theframe (and high-voltage transformer, if present).

– Have customer check the ac voltage at the customer's receptacle or other power connection forac voltage within 180-254 V ac.

Is customer's ac present and within 180-254 V ac?Yes No

012

Problem with customer ac power.– Have customer correct problem.– Go to “MAP 0570: End of Call” on page 1-357.

013

– With power removed, replace the ac line cord.– Go to Step 049 on page 1-236 to verify fix.

014

ac voltage present at frame input.(Step 014 continues)

1-230 RS/6000 SP MAPs


014 (continued)Is this the first time at this step?Yes No

015


016

– Go to Step 033 on page 1-233 to continue fault isolation.

017

DANGER


– Open the service access cover of the high-voltage transformer.– Using a multimeter, check ac phase-to-phase voltage between test points H0 and H1 on the high-

voltage transformer.Is ac present and within 340-440 V ac?Yes No

018

– Put both circuit breakers of high-voltage transformer in the Off (‘0’) position.– Have customer put his wall circuit breaker in the On position.Does the customer circuit breaker stay in the On position?Yes No

019

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2or “Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary powerto the frame (and high-voltage transformer, if present).

– Replace the ac power cord connecting the high-voltage transformer to the customer'spower.


020

DANGER


– Put input circuit breaker of the high-voltage transformer in the On (‘1’) position.– Using a multimeter, check ac phase-to-phase voltage between test points H0 and H1 on the high-

voltage transformer.(Step 020 continues)



020 (continued)Is ac present and within 340-440 V ac?Yes No

021

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2or “Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary powerto the frame (and high-voltage transformer, if present).

– Replace high-voltage transformer and power cable connecting the high-voltage transformerto the customer's power.


022

– Go to Step 024.

023

– Go to Step 024.

024

DANGER


– Put output circuit breaker of the high-voltage transformer in the On (‘1’) position.– Using a multimeter, check ac phase-to-phase voltage between test points O1 and O2 on ac filter.Is ac present and within 180-254 V ac?Yes No

025

Problem with the power not coming into frame.

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2 or“Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary power to theframe (and high-voltage transformer, if present).

– Disconnect RS/6000 SP ac line cord from the high-voltage transformer.– Using a multimeter, check continuity of the ac line cord from the plug to the test points on the ac

filter.(Step 025 continues)

1-232 RS/6000 SP MAPs


025 (continued)Is there continuity on all three phases?Yes No

026

– Replace the ac line cord.– Go to Step 049 on page 1-236 to verify fix.

027

– Using a multimeter, check for a short condition between the three test points (O1, O2, and O3) onthe ac filter.

Is there a short condition between the test points?Yes No

028

– Replace the high-voltage transformer.– Go to Step 049 on page 1-236 to verify fix.

029

– Detach ac line cord from ac filter.– Check for a short condition on the ac line cord.Is there a short condition on the ac line cord?Yes No

030

– Go to Step 033.

031

– Replace the ac line cord.– Go to Step 049 on page 1-236 to verify fix.

032

– Go to Step 033.

033

Problem in Power Distribution Unit section.

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2 or“Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary power to the frame(and high-voltage transformer if present).

– Open Power Distribution ac section.– Check for an obvious problem with the following ac cables to the 12/24 V supervisor power supplies

which might be causing a short or open condition.

PDU-CB-L2 to PDU-S1-L1(Step 033 continues)



033 (continued)PDU-CB-C2 to PDU-S1-L2/NPDU-CB-L2 to PDU-S2-L1PDU-CB-C2 to PDU-S2-L2/N

– Check for a short condition between the following points:

PDU-CB-L2 to PDU-CB-C2PDU-CB-L2 to PDU-CB-R2PDU-CB-C2 to PDU-CC-R2ADC-TB-01 to ADC-TB-02ADC-TB-01 to ADC-TB-03ADC-TB-02 to ADC-TB-03

Do the cables appear to be okay?Yes No

034

– Fix the obvious cable problem.– Go to Step 051 on page 1-236 to verify fix.

035

– With power removed, put main circuit breaker in On (‘1’) position.– Check continuity of the three phases between ac filter and the circuit breaker output using the following

test points:

� ac filter O1 to top left of main circuit breaker� ac filter O2 to top center of main circuit breaker� ac filter O3 to top right of main circuit breaker

Is there continuity on all three phases?Yes No

036

– Check continuity across main circuit breaker on all three phases. This is done by checking conti-nuity between corresponding test points directly above to test points directly below the maincircuit breaker .

Is there continuity on all three phases across circuit breaker?Yes No

037

– Replace main circuit breaker.– Go to Step 049 on page 1-236 to verify fix.

038

– Check continuity of the three phases from the ac filter to the circuit breaker input using the fol-lowing test points:

� ac filter O1 to top left of main circuit breaker� ac filter O2 to top center of main circuit breaker� ac filter O3 to top right of main circuit breaker


1-234 RS/6000 SP MAPs


038 (continued)Is there continuity on all three phases?Yes No

039

– Replace ac filter.– Go to Step 049 on page 1-236 to verify fix.

040


041

– Go to Step 042

042

Is this an SP1 frame?Yes No

043

– Check cable connections at circuit breaker and supervisor power supplies for any loose con-nections.

Does there appear to be any loose connections?Yes No

044

– Replace cable PDU-CB-L2.Is this your first time at this step?Yes No

045

– Replace supervisor power supply.– Go to Step 049 on page 1-236 to verify fix.

046


047

– Fix connections.– Go to Step 049 on page 1-236.

048

–

Consult 9076 SP1 Maintenance Information for SP1-specific procedures.

049



– Make sure that all circuit breakers feeding power to this frame are in the On (‘1’) position. This includesthe customer's circuit breaker, the circuit breaker for the frame, and the circuit breakers on the high-voltage transformer (if present).

– Once all circuit breakers have been put in the On ('1) position, verify that they have all stayed in the On(‘1’) position.

Do all circuit breakers stay in the ('On') position.Yes No

050

Problem not resolved.– Restart this MAP at Step 001 on page 1-229.

051

No apparent shorts to 12/24 V supervisor power supplies in this frame.– Check the Power Distribution Unit rear panel LED and the frame supervisor LEDs for any LEDs that are

lit.Are the Power Distribution Unit rear panel LED or any frame supervisor LEDs lit?Yes No

052


053

Supervisor power problem resolved.– Reinstall service access cover on the high-voltage transformer (if present).– Put main power switch on the On (‘1’) position.– Check the PDU rear panel LED and the frame supervisor LEDs for any LEDs that are lit.Are the PDU rear panel LED or any frame supervisor LEDs lit?Yes No

054

– Isolate short between contactor T1, T2, T3 and 48 V power chassis 01, 02, and 03.– Replace parts as required.– Go to Step 051 to verify fix.

055

Problem resolved.– Reinstall PDU access cover(s).– Go to “MAP 0570: End of Call” on page 1-357.

1-236 RS/6000 SP MAPs

MAP 0400: Supervisor Power 12 Volts DC Problem

MAP 0400: Supervisor Power 12 V dc ProblemProblem detected with supervisor power supply 12 V dc:

� Main power switch LED is On� -OR- PDU rear panel LED is On� -BUT- all frame supervisor LEDs are Off.

Refer to Figure 1-22, for a diagram of the RS/6000 SP +12 V dc supervisor power.

LineFilter CB

12vPowerSupply Node

PowerSupply

+12v

+12v

LED

J402

J406

+12v

J7

J8

Switch 2 4 6 8 10 12 14

11 13 151 3 5 7 9

J408Supervisor BUS ’B’ Odd Nodes

Supervisor BUS ’A’ Even Nodes

+12vRS232

LEDs

(Yellow)(Yellow)

(Green)

(Green)

Supervisor BusCommunications

RS232 Active

+48v Status

AC Power

FrameConnector

Card

FrameSupervisor

Card

Supervisor

Customer200-240 AC

3 phaseinput

Figure 1-22. PDU Supervisor Power + 12 V dc Diagram

001

Problem with supervisor power supply 12 V dc:Did you get here from “MAP 0110: Supervisor Subsystem” on page 1-10?Yes No

002

– Check green and yellow LEDs on processor nodes. If none are lit, detach supervisor harnessfrom one processor node, then reinsert to cause Node Supervisor Self-Test to run. Refer to"Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for this procedure.

Were any green or yellow LEDs on any processor node lit before or during this test?Yes No

003


004



There is some 12 V dc power in the frame.– Go to Step 005 on page 1-15 to check frame supervisor.

005

No 12 V dc supervisor power available. LEDs on frame supervisor card and node supervisor cards do notlight.

DANGER


– Open Power Distribution Unit ac and dc power sections.– Check connection of cable PDU-FC-P402 at connector card.– If cable PDU-FC-P402 was already seated properly, disconnect cable PDU-FC-P402 at connector card

and check continuity of cable between PDU-FC-P402 and 12 V dc supervisor power supply.Does the cable appear okay and show continuity?Yes No

006

– Fix cable PDU-FC-P402 problem. If necessary, to replace this cable, replace the entire PDU.– Go to Step 044 on page 1-242 to verify fix.

007

– Using a multimeter, check resistance between connector card PDU-FC-J402 pin 1 and pin 2.Is the resistance less than 5.0 ohms?Yes No

008

– Check all cables from a 12 V dc supply for a problem such as a poor cable connection or opencable.

Do the cables and connections from the 12 V dc supply appear to be okay?Yes No

009

– Fix or replace cable as necessary.– Go to Step 044 on page 1-242 to verify fix.

010

– For RS/6000 SP frames, replace the +12 V dc supervisor power supply.– For 9076 SP1 frames, replace supervisor power supply.– Reinstall covers over Power Distribution Unit ac and dc sections.– Reconnect ac and put the main circuit breaker in the On (‘1’) position.Do any frame supervisor LEDs light?Yes No

011

1-238 RS/6000 SP MAPs


DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2or “Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary powerto the frame.

– Open Power Distribution Unit dc section.– Replace connector card.– Go to Step 044 on page 1-242 to verify fix.

012

Power problem resolved.– Go to “MAP 0570: End of Call” on page 1-357.

013

– Go to Step 014

014

Short in 12 V dc distribution.– Disconnect supervisor harnesses PDU-BH-P7 and PDU-BH-P8 from the Power Distribution Unit.– Check for short between connector card PDU-FC-J402 pin 1 and pin 2.Does short disappear with both cables removed?Yes No

015

– Disconnect supervisor tailgate cables at connector card PDU-FC-J406 and PDU-FC-J408, thencheck for short between connector card PDU-FC-J402 pin 1 and pin 2.

Does short disappear with both cables removed?Yes No

016

Short in frame supervisor card cage.– Unscrew connector card faceplate and unseat connector card from backplane card.– Check for short between connector card PDU-FC-J402 pin 1 and pin 2.Has short disappeared?Yes No

017

– Replace connector card.– Go to Step 043 on page 1-242.

018

– Reseat connector card.– Unscrew frame supervisor card faceplate and unseat frame supervisor card from backplane

card.– Check for short between connector card PDU-FC-J402 pin 1 and pin 2.(Step 018 continues)



018 (continued)Has short disappeared?Yes No

019

– Replace backplane card.– Go to Step 043 on page 1-242 to verify fix.

020

– Replace frame supervisor card.– Go to Step 043 on page 1-242 to verify fix.

021

– Replace tailgate cable(s) PDU-FC-P406 and/or PDU-FC-P408, whichever is causing the shortcondition.


022

– Short detected on a supervisor harness.– Reconnect cables PDU-BH-P7 and PDU-BH-P8 one-at-a-time, checking for a short condition between

connector card PDU-FC-J402, pin 1 and pin 2 each time.Do you detect a short condition after reconnecting either cable?Yes No

023

No short detected.– Call next level of support.

024

Short isolated to a single supervisor harness.– Disconnect the shorted supervisor harness from the processor node(s) N00-BH-J8 and/or switch assem-

blies HPS-BH-J2 (one-at-a-time), until the short condition disappears, or the supervisor harness isentirely disconnected.

Does the short condition disappear by disconnecting the supervisor harness from a processornode(s) and/or switch assemblies?Yes No

025

– Replace this supervisor harness.– Go to Step 043 on page 1-242 to verify fix.

026

Short is inside a processor node or switch assembly.– Go to Step 027.

027


1-240 RS/6000 SP MAPs


027 (continued)Is this an HiPS 2.0, HiPS 3.0 or HiPS-LC8?Yes No

028

– Go to Step 034.

029

– Remove processor node or switch assembly from the system. Refer to "Service Position Procedures" inIBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures.

– Disconnect supervisor cable at supervisor card NS-J101 or SP-J101, then check for a short betweensupervisor card NS-U102 or SP-U102 pin 1 and pin 2.

Has short disappeared?Yes No

030

– Replace the node or switch supervisor card.– Go to Step 043 on page 1-242.

031

– Reattach supervisor cable at supervisor card J101. Access rear connector panel at rear of assembly.– Detach supervisor bus card from cable SB-P102, then check for short between node supervisor card

NS-U102 or SP-U102 pin 1 and pin 2.Has the short disappeared?Yes No

032

– Replace supervisor cable N00-NS-P101 or S00-SP-P101.– Go to Step 043 on page 1-242 to verify fix.

033

– Replace supervisor bus card.– Go to Step 043 on page 1-242 to verify fix.

034

– Remove switch assembly from the system. Refer to "Service Position Procedures" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations and Service Procedures.

– Disconnect switch inner chassis cable connections P4, P5, and P6. Check for a short between con-nector P3 pin p1 and pin p2.

Has short disappeared?Yes No

035

– Replace switch inner chassis cable.– Go to Step 043 on page 1-242.

036




036 (continued)– Reattach switch inner chassis cable connector P5.– Recheck for short at P3 pins p1 and p2.Has the short disappeared?Yes No

037

– Replace switch supervisor power card.– Go to Step 043 to verify fix.

038

– Reattach switch inner chassis cable connector P4.– Recheck for short at P3 pins 1 and 2.Has the short disappeared?Yes No

039

– Replace switch power card (PS2).– Go to Step 043 to verify fix.

040

– Reattach switch inner chassis cable connector P6.– Recheck for short at P3 pins 1 and 2.Has the short disappeared?Yes No

041

– Replace switch power card (PS1).– Go to Step 043 to verify fix.

042

Problem resolved.– Go to Step 043 to verify fix.

043

Component causing a short condition was replaced.– Replace processor node(s) and/or switch assemblies from the service position. Refer to "Service Posi-

tion Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-dures.

– Make sure all cables are reconnected at processor node(s) switch assemblies and at Power DistributionUnit dc section, except for connector card PDU-FC-J402.

– Check for a short condition between connector card PDU-FC-J402 pin 1 and pin 2.Is there still a short condition at PDU-FC-J402?Yes No

044

Short and/or open condition removed from 12 V dc distribution.(Step 044 continues)

1-242 RS/6000 SP MAPs


044 (continued)– Reinstall cover(s) over Power Distribution Unit section(s) panel.– Reapply power to the frame, then check for LEDs lit on the frame supervisor card.Are any LEDs lit on frame supervisor card?Yes No

045


046


047

Another short exists in the 12 V dc distribution.– Go to Step 014 on page 1-239.



MAP 0410: Supervisor Power 24 V dc ProblemProblem detected with supervisor power supply- 24 V dc:

� Main power switch LED is On� -AND- PDU rear panel LED is Off� -BUT- some frame supervisor LEDs are On.

Figure 1-23. PDU + 24 V dc Circuit Diagram

001

Problem with supervisor power supply- 24 V dc.

DANGER


– Open Power Distribution Unit ac power section.– Check all cables from 24 V dc supply for a problem such as a poor cable connection or open cable.Do the cables and connections from the 24 V dc supply appear to be okay?Yes No

002

– Fix cable problem. Reconnect ac and put main circuit breaker in the On (‘1’) position.– Check PDU rear panel LED.Is the PDU rear panel LED lit?Yes No

003

Problem not resolved.– Go to “MAP 0370: Main Power” on page 1-222.

004


005


1-244 RS/6000 SP MAPs


005 (continued)– Using a multimeter, measure resistance from contactor coil pin A1 (positive lead) and A2 (negative

lead).Is resistance < 40 ohms?Yes No

006

– For RS/6000 SP frames, replace +24 V supervisor power supply.– Replace supervisor power supply.– Reconnect ac and put main circuit breaker in the On (‘1’) position.Does the Power Distribution Unit rear panel LED light?Yes No

007

– Check for a cable problem. Replace power distribution unit if necessary.– Go to “MAP 0570: End of Call” on page 1-357.

008

Supervisor power 24 V dc is now present in system.Is the problem resolved?Yes No

009

Problem not resolved.– Go to “MAP 0370: Main Power” on page 1-222.

010


011

– Disconnect wire from contactor coil pin A1 or A2, then measure resistance between contactor pin A1and A2.

Is resistance < 40 ohms?Yes No

012


013

– Replace contactor.– Reinstall cover over Power Distribution Unit ac section.– Reconnect ac power, then with the main circuit breaker in the On (‘1’) position, check Power Distribution

Unit rear panel LED.(Step 013 continues)



013 (continued)Is the Power Distribution Unit rear panel LED lit?Yes No

014

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2 or“Lockout/Bagout Procedure for PDU” on page 1-3 to remove primary power to theframe.

– Open Power Distribution Unit ac power section.– Go to Step 006 on page 1-245.

015


1-246 RS/6000 SP MAPs

MAP 0420: Main Power Switch

MAP 0420: Main Power SwitchProblem detected concerning Main Power Switch LED:

� The main power switch LED is Off.

Figure 1-24. PDU + 24 V dc Circuit Diagram

001

LED on Main Power Switch is not lit.– Check Main Power Switch position.Is Main Power Switch in On (‘1’) position?Yes No

002

– Put Main Power Switch in On ('1') position.– Check conditions in table from Step 001 on page 1-226Do any of these conditions exist?Yes No

003

No power problems.– Go to “MAP 0570: End of Call” on page 1-357.

004


005

– Go to Step 006

006

– Check processor nodes for any Power (green) LEDs On or flashing. If no Power (green) LEDs are lit,make sure that the circuit breaker at the front of at least one processor node is in the On (‘1’) position.




006 (continued)Are green LEDs On or Flashing on any processor node(s) (excluding those due to self-test)?Yes No

007

No 48 V dc power at processor nodes.– Check cable PDU-BH-P6 for an obvious problem.Does the cable appear to be okay?Yes No

008

– Fix the obvious cable problem.– Go to “MAP 0570: End of Call” on page 1-357.

009

– Disconnect cable PDU-BH-P6 from Power Distribution Unit.– With main power switch in On (‘1’) position, check for continuity between PDU-BH-P6 pin 2 and

pin 5, then check for continuity between pin 3 and pin 4.Is there continuity in both cases on connector PDU-BH-P6?Yes No

010

Problem with the main power switch.– Open the main power switch assembly.– Disconnect the white connector of the main power switch from the main power switch cable

PDU-SW-P1.– With main power switch in On (‘1’) position, check for continuity between the two pins of the

white main power switch connector.Is there continuity between these two pins?Yes No

011

– Replace main power switch. Make sure to connect main power switch connector tothe main power switch cable PDU-SW-P1.

– Reconnect main power switch cable PDU-BH-P6 at Power Distribution Unit.– Reconnect ac power and power on system.– Go to Step 002 on page 1-247 to verify fix.

012

– Replace main power switch cable PDU-BH-P6.– Go to Step 002 on page 1-247 to verify fix.

013

Main power switch not getting 24 V dc power from connector.

1-248 RS/6000 SP MAPs


DANGER


– Open Power Distribution Unit ac power section.– Check for continuity between contactor pin A1 and PDU-BH-J6 pin 2 and pin 5.– Check for continuity between 24 V supervisor power supply + terminal and PDU-BH-J6 pin 4.Is there continuity in all cases?Yes No

014

– Replace cables as required.– Reconnect ac power and power on system.– Go to Step 002 on page 1-247 to verify fix.

015


016

– Main power LED card should be replaced; however, this action requires powering off all processornodes.

Are there other problems requiring this frame to be powered off?Yes No

017

Schedule maintenance to replace main power LED card.Go to “MAP 0570: End of Call” on page 1-357

018

Replace main power LED card.Go to “MAP 0570: End of Call” on page 1-357


MAP 0430: DC Power Loss from Bulk DC Power Supply(s)

MAP 0430: dc Power Loss from Bulk dc Power Supply(s)System monitor log reports “dc Power Loss” for any bulk dc power supplies:

� Refer to Figure 1-25 to view the dc bulk power supplies.

Figure 1-25. PDU + 48 V dc Power Diagram

001

– From the system monitor on the control workstation, open the “Frame Environment” window.– Check for “dc Power Loss” (red) condition for all four power supplies.

� If all four show “dc Power Loss”, then open “Global commands” window and power-off all processornodes in this frame.

� If only one shows “dc Power Loss”, then order another supply for use in isolating the failing part.

– From the “Frame Environment” window, attempt to power on any bulk dc power supplies which areindicating a “dc Power Loss” (red) condition, by clicking on the On button corresponding to the powersupplies.


1-250 RS/6000 SP MAPs


001 (continued)Does the system monitor still indicate “dc Power Loss” (red) for the supplies?Yes No

002

Power supply is now enabled.– If components were replaced or service action was completed, refer to "Procedures for Skirts and

Main Power Switch" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations andService Procedures to replace the air filter assembly and acoustic skirts.


003

One or more bulk dc power supplies shows a dc failure.– Refer to "Procedures for Skirts and Main Power Switch" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures to remove acoustic skirts and air filter assembly.– Check the LEDs on the front of the bulk dc power supplies.

Yellow LED: ac In - Indicates power supply is getting ac power andpower switch is in On (‘1’) position.

Green LED: dc OK - Indicates power supply is supplying 48 volt dc power.

Are yellow LEDs unlit on any bulk dc power supplies?Yes No

004

ac input is okay and all power supplies are enabled from system monitor.Are green LEDs lit on all bulk dc power supplies?Yes No

005

Some green LEDs are not lit.Are green LEDs lit on any bulk dc power supplies?Yes No

006

Probable short in 48 V dc power distribution.– Go to “MAP 0440: Short in 48 V dc Power Distribution” on page 1-257.

007


008


009

– Remove filter bracket and ensure that switches for all power supplies are in the On (‘1’) position. Putswitches in the On (‘1’) position if necessary.

– Check LEDs on front of bulk dc power supplies.(Step 009 continues)



009 (continued)Are yellow LEDs unlit on any bulk dc power supplies?Yes No

010

No ac input problem.Did you just put a switch in the On (‘1’) position?Yes No

011


012


013

– Go to Step 014

014

One or more bulk dc power supplies showing ac input problem.Are all yellow LEDs unlit?Yes No

015

Bulk dc power supply failure(s).– Replace bulk dc power supplies where yellow LEDs are not lit.– Put switch in the On (‘1’) position.– Check LEDs on the front of this supply.Is the yellow LED lit?Yes No

016

Problem in power chassis.– Go to Step 023 on page 1-253.

017


018

48 V power chassis not getting ac power.

DANGER

High voltage present. Use high voltage test probes.

– Check phase-to-phase ac voltage at ac filter test points. Measure ac voltage from O1 to O2, O1 to O3,and O2 to O3.


1-252 RS/6000 SP MAPs


018 (continued)Is ac voltage present and between 180-254 volts ac for all phases?Yes No

019

ac power problem.– Go to “MAP 0370: Main Power” on page 1-222.

020

DANGER


– Open Power Distribution Unit ac section.– Check cables from contactor for an obvious problem such as a poor connection or damaged cable.Do cables from the contactor appear okay?Yes No

021

– Replace cables as required.– Reinstall covers over Power Distribution Unit ac section.– Reconnect ac power and power on system.– Go to Step 001 on page 1-250 to verify fix.

022

– Replace contactor.– Reinstall covers over Power Distribution Unit ac section.– Reconnect ac power and power on system.– Check yellow LEDs on bulk dc power supplies.Do yellow LEDs light on any bulk dc power supplies?Yes No

023

– Replace power supply chassis.– Reinstall covers over Power Distribution Unit ac and dc sections.– Reconnect ac power and power on system.– Go to Step 001 on page 1-250 to verify fix.

024


025

Bulk dc power supplies getting ac power, but indicating ac problem or “dc Power Loss” condition.– Make a note of which power supplies (A, B, C, or D) is indicating a problem.– Try swapping a power supply indicating an ac or “dc Power Loss” with a good supply.

Note: This step may be done while system is in use; however, at least three bulk dc power suppliesmust be operating at all times to ensure adequate power for full system utilization.



Does the good supply give the same indication?Yes No

026

Original bulk dc power supply is bad.– Replace the original bulk dc power supplies.– Go to Step 001 on page 1-250 to verify fix.

027

DANGER


– Open Power Distribution Unit dc section.– Check the following two point-to-point connections between 48 V power chassis and connector card for

an obvious problem such as a poor connection or a damaged cable:

� Cable PDU-FC-P403 to ADC-BH-P1� Cable PDU-FC-P404 to ADC-BH-P2

– Check for an obvious short between the +48 V and +48 VRtn busbars.Do the cables and connection appear okay?Yes No

028

– Fix the obvious problem.– Go to Step 038 on page 1-255 to verify fix.

029

Bulk dc power supplies A and B share the same cable, while bulk dc power supplies C and D share adifferent cable.

A. B: Cable PDU-FC-P403 to ADC-BH-P1C, D: Cable PDU-FC-P404 to ADC-BH-P2

Is the ac problem or “dc Power Loss” (red) indication limited to a single supply or both supplieson a single cable?Yes No

030

– Problem is in one of the following components:

1. Frame supervisor card. (Can be done with system powered on.)

2. Connector card

3. Backplane card

– Replace components one by one, powering off system (except where indicated) to replace thecomponent, then powering on the system (where necessary) and checking the system monitor forthe “dc Power Loss” cleared (green instead of red) condition.


1-254 RS/6000 SP MAPs


030 (continued)Were you able to correct the problem?Yes No

031


032


033

– Swap cables PDU-FC-P403 and PDU-FC-P404 at connector card end only.– Reconnect ac power and power on system.– From the “Frame Environment” window, check the “PowerDC” indicator for red, which indicates a “dc

Power Loss” condition.Is the same supplies (A, B, C, or D) identified in Step 025 on page 1-253 reporting a problem?Yes No

034

– Swap cables ADC-BH-P1 and ADC-BH-P2 at 48 V power chassis end only.– Reconnect ac power and power on system.– Check the “Frame Environment” window for a “dc Power Loss” (red) condition.Is the original supplies reporting a “dc Power Loss” (red) condition again?Yes No

035

Problem in cable(s).– Swap cables PDU-FC-P403 and PDU-FC-P404 at both connector card and 48 V power

chassis to return them to the original connections as shown below.– Replace the problem cable as indicated below:

A, B: Cable PDU-FC-P403 to ADC-BH-P1C, D: Cable PDU-FC-P404 to ADC-BH-P2

– Go to Step 038 to verify fix.

036

– Replace the power supply chassis.– Go to Step 001 on page 1-250.

037

– Swap cables PDU-FC-P403 and PDU-FC-P404 at connector card end to return to the correct con-nections.


038




038 (continued)– Power on system and check the “Frame Environment” window for “dc Power Loss” (red) condition.Is the problem resolved?Yes No

039

Problem not resolved.– Go to Step 029 on page 1-254 to continue service.

040


1-256 RS/6000 SP MAPs

MAP 0440: Short in 48 Volts DC Power Distribution

MAP 0440: Short in 48 V dc Power DistributionShort in 48 V dc distribution system. Refer to Figure 1-26 for a diagram of the RS/6000 SP frame 48 voltdistribution.

001

Short in 48 V dc power distribution.

J1 P1

J2 P2

J3 P3

J4 P4

J5 P5

Switch

J407

Frame Connector Card

N+1Power

Supplies

BUSBars

A

B

C

D

CB

CB

CB

CB

RISC

RISC

I/O Planar-12 +12 +5v

I/O Planar-12 +12 +5v

NodePowerSupply

NodePowerSupply

Node 4

Node 16

Nodes9 10 11

Nodes13 14 15

Nodes1 2 3

Nodes5 6 7

12

8

Figure 1-26. PDU 48 Volts Distribution Diagram

– Switch all processor node and switch assembly circuit breakers to Off (‘0’) position.– Disconnect dc distribution cables PDU-BH-P1, PDU-BH-P2, PDU-BH-P3, PDU-BH-P4, and PDU-BH-P5

at Power Distribution Unit. This isolates 48 V dc to the Power Distribution Unit only.– Remove front skirt assembly and air filter bracket.– Turn on all bulk power supplies from the control workstation.– Check green LEDs on all bulk power supplies.Are green LEDs lit on all bulk power supplies?Yes No

002

dc short detected in the Power Distribution Unit section.

DANGER




– Remove rear panel of Power Distribution Unit dc section.– With all power removed from the system. Disconnect busbars from 48 V power chassis dc lugs.– Check continuity between +48 V and -48 VRtn busbars.Is there continuity between +48 V and -48 VRtn busbars?Yes No

003

– Reconnect busbars to 48 V power chassis lugs.– Reinstall Power Distribution Unit dc section cover.– Unseat all bulk dc power supplies.– Reconnect ac power and power on system.– Put main circuit breaker in the On (‘1’) position.– Reseat all bulk dc power supplies one at a time, flip the bulk power supply circuit breakers

to On (‘1’) position, then check that yellow and green LEDs are lit when reseated.Do any bulk power supplies light both yellow and green LEDs?Yes No

004

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” onpage 1-2 or “Lockout/Bagout Procedure for PDU” on page 1-3 to removeprimary power to the frame.

– Replace power supply chassis.– Reconnect ac power and power on system.– Go to “MAP 0570: End of Call” on page 1-357.

005

– Replace any bulk dc power supplies which cause bulk dc power supply green LED(s) to gooff or cause main circuit breaker to trip to Off (‘0’) position.


006

– Remove plastic cover over busbars.– Check for an obvious short between the +48 V and -48 VRtn busbars.Is there an obvious short between the +48 V and -48 VRtn busbars?Yes No

007

Short in tailgate cables PDU-BH-J1, PDU-BH-J2, PDU-BH-J3, PDU-BH-J4, and/orPDU-BH-J5.– Set multimeter to constantly check continuity between the +48 V and -48 VRtn busbars.– Starting from closest connection, start removing cable connections to the '+' busbar. Repeat

this until there is no longer continuity.– Replace dc tailgate cable connected to the wire you just removed.– While checking continuity, start reattaching the cable connections you had removed above.

Replace any other cables which cause continuity between the +48 V and +48 VRtnbusbars.


1-258 RS/6000 SP MAPs


007 (continued)– Go to Step 008.

008

– If necessary, reconnect busbars.– Remove the obvious short between busbars.– Reinstall plastic cover over the busbars.– Reinstall panel over Power Distribution Unit dc section.– Reconnect ac power and power on system.– Go to Step 009.

009

Possible short in dc distribution cables.– One at a time, reconnect dc distribution cables PDU-BH-P1, PDU-BH-P2, PDU-BH-P3, PDU-BH-P4,

and PDU-BH-P5 at Power Distribution Unit.– After each connection, check frame supervisor green LED #2 for an OFF condition, indicating a short

condition.Are you able to reconnect all cables without indication of a short condition?Yes No

010

– Replace the cable that caused the short condition.– From the control workstation, turn on any bulk dc power supplies that are off.– Check frame supervisor green LED #2 for an OFF condition, indicating a short condition.Is there still a short condition following replacement of this cable?Yes No

011

Problem resolved.– Make sure all cables in Step 009 are reconnected.– Go to “MAP 0570: End of Call” on page 1-357.

012

Short inside processor node(s) or switch assemblies.– Disconnect this dc distribution cable from all processor nodes.– From the control workstation, turn on any power supplies that are off.– Reconnect the dc distribution cable to processor node(s) or switch assemblies one at a time,

checking the bulk dc power supplies for indication of a short condition.– Check frame supervisor green LED #2 for an OFF condition, indicating a short condition.Are you able to reconnect the cable to all processor nodes or switch assemblies withoutindication of a short condition?Yes No

013

– Remove the processor node or switch assembly causing the short condition from the frame.– Check the 48 V dc power harness inside the processor node or switch assembly for an

obvious problem such as a chafed or broken cable.(Step 013 continues)



013 (continued)Is there an obvious problem with the 48 V dc power harness?Yes No

014

– Replace the 48 V dc power harness.– Reconnect the processor node or switch assembly and check for a short condition

again.– Continue at the second bullet (powering on any bulk dc power supplies that are Off)

of Step 012 on page 1-259.

015

– Correct the obvious problem. If necessary, replace the 48 V dc power harness.– Reconnect the processor node or switch assembly and check for a short condition again.– Continue back at the second bullet of Step 012 on page 1-259.

016

– Go to Step 009 on page 1-259 and reconnect next cable.

017

Possible short in processor node(s) or switch assemblies.– Put processor node and switch assembly circuit breakers in On (‘1’) position one at a time, checking the

frame supervisor green LED #2 for an OFF condition, indicating a short condition.Are you able to power on all processor nodes and switch assemblies without indication of a shortcondition?Yes No

018

– Remove the processor node or switch assembly causing the short condition from the frame.– Check the 48 V dc power harness inside the processor node or switch assembly for an obvious

problem which might be causing the short condition.Is there an obvious problem which might be causing the short condition?Yes No

019

– Replace the node supervisor card or switch power card.

Note: If this is an HiPS 2.0 switch assembly, replace the entire switch assembly to fixproblem.

– Reconnect the processor node or switch assembly and put circuit breaker in the On (‘1’)position.

– From the control workstation, enable any power supplies that are turned off.– Go to Step 017.

020

– Fix the obvious problem which might be causing the short condition.– Reconnect the processor node or switch assembly and put circuit breaker in the On (‘1’) position.(Step 020 continues)

1-260 RS/6000 SP MAPs


020 (continued)– Check the frame supervisor green LED #2 for an OFF condition, indicating a short condition.Is there an indication of a short condition?Yes No

021


022


023

Either no short condition was detected or the short condition was resolved.– Go to “MAP 0570: End of Call” on page 1-357.


MAP 0450: Frame Environment

MAP 0450: Frame EnvironmentProblem indicated by frame supervisor.

Pri-ority Condition Action

1 Frame supervisor green LED #2 (dc OK) isflashing.

Go to Step 001.

2 Frame temperature indicates over 40° C. Go to Step 008 on page 1-264.

001

Frame 48 V dc voltage out of range.

DANGER

High energy present. Do not short 48 V to frame or 48 VRtn. Shorting will result in systemoutage and possible physical injury.

– Remove rear panel of PDU dc section.– Unplug the 48 V dc sense cable PDU-FC-P407 at connector card.– Using a multimeter, measure the dc voltage between PDU-FC-P407 pin 1 and pin 3.– Replug the 48 V dc sense cable PDU-FC-P407 at connector card.Is the measured voltage in the range 44-52 V dc?Yes No

002

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2 or“Lockout/Bagout Procedure for PDU” on page 1-3 to remove all power to the frame.

– Replace the 48 V dc sense cable PDU-FC-P407.– Reconnect ac power and power on system.– Go to “MAP 0570: End of Call” on page 1-357.

003

– Use the following prioritized table to continue service:

1-262 RS/6000 SP MAPs


004

– Reconnect power to the frame.– Put main power switch in the On (‘1’) position.– From the control workstation, open the “Frame Environment” window and make sure that all indicators

for the bulk dc power supplies show good status (green). You may need to click on the On button toenable them.

– Go to Step 005.

005

Component replaced and system powered on.– Check frame supervisor green LED #2 for a solid ON condition.Does frame supervisor green LED #2 show a solid ON condition?Yes No

006

Problem not resolved.– Go to Step 003 on page 1-262 to replace the next priority part.

007



1 Frame supervisor card 1. Replace card (can be done with system powered)

2. Go to Step 005 on page 1-263.

2 Connector card DANGER

High voltage present. Perform“Lockout/Tagout Procedure for PDU” onpage 1-2 or “Lockout/Bagout Procedure forPDU” on page 1-3 to remove all power tothe frame.

1. Replace card. Make sure to connect all cables.


3 Backplane card DANGER

High voltage present. Perform“Lockout/Tagout Procedure for PDU” onpage 1-2 or “Lockout/Bagout Procedure forPDU” on page 1-3 to remove all power tothe frame.

1. Replace card. Make sure to connect all cables.





007 (continued)– Go to Step 011 to verify fix.

008

Frame supervisor has detected a temperature beyond an acceptable range for the system.– Check the air filter area (behind the front skirt) and around the Power Distribution Unit area for obvious

airflow blockage or external source of heat.Is there obvious blockage or external source of heat?Yes No

009

Frame supervisor card may be reporting incorrect temperature.– Replace the frame supervisor card.– Go to Step 011 to verify fix.

010

– Remove blockage or source of heat from area.– Go to “MAP 0570: End of Call” on page 1-357.

011

Problem resolved.– Reinstall cover over power distribution dc section if necessary.– Perform "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information, Volume 3,


012

– Go to “MAP 0110: Supervisor Subsystem” on page 1-10 to continue service.

013


1-264 RS/6000 SP MAPs

MAP 0460: Scalable Electrical Power Base Unit

MAP 0460: Scalable Electrical Power Base Unit (SEPBU)Notes:

1. SEPBU is an acronym for the Scalable Electrical Power Base Unit.

2. Connectors on the SEPBU still use “PDU” as assembly designations, (for example PDU-BH-J7).

DANGER

If a unique power module fails, all LEDs will be off. The high voltage LED will be off eventhough the high voltage is still present.

Attention: Be careful when working on a single-phase SEPBU power supply without N+1 (two) powermodules, since there is no secondary power module.

The Scalable Electrical Power Base Unit (SEPBU) consists of the following components:

� ac line cord (connectorized)� SEPBU power chassis� SEPBU power modules

� Frame supervisor� PCI card (see note below)� Main power switch� 48 V dc distribution cables.

Note: For more information on PCI (power control interface) function, see “RS/6000 SP Function” inChapter 2 of RS/6000 SP: Maintenance Information, Volume 1

.

001

Problem detected concerning power in system.


– Refer to "Procedures for the Scalable Electrical Power Base Unit (SEPBU)" in IBM RS/6000 SP: Main-

tenance Information, Volume 3, Locations and Service Procedures when replacing SEPBU components.– Check the condition of the following LEDs:

� Main power switch LED

� SEPBU rear panel LED

� Frame supervisor LEDs.

– The following table contains a prioritized list of conditions.

Find the first condition that describes your problem, then perform the suggested action:

Note: The system monitor log can be viewed by issuing the following command:

errpt -a -N sphwlog | pg

on the control workstation.




1 Main power switch LED is Off-AND- SEPBU rear panel LED is Off-AND- Frame Supervisor LEDs are Off.


2 Main power switch LED is On-OR- SEPBU rear panel LED is On,-BUT- all frame supervisor LEDs are Off.


3 Main power switch LED is Off Go to Step 035 on page 1-272.

4 System monitor log reports “dc Power Loss” forany power module(s).


5 Frame temperature is over 40° C. Go to Step 081 on page 1-278.

6 Problem with 48 V dc power distribution toprocessor node(s) or switch assemblies.

Go to “MAP 0480: Open in 48 V dcDistribution” on page 1-283.

1-266 RS/6000 SP MAPs


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Figure 1-27. SEPBU Power Diagram

002

– Problem detected concerning power in the system.

� Main power switch LED is Off� -AND- SEPBU rear panel LED is Off� -AND- Frame Supervisor LEDs are Off.



DANGER


– Put main power switch in the Off (‘0’) position.

Note: Test points Z1, Z2, and Z3 are current limited. Therefore the measured test point voltage will beslightly less than the actual line voltage. For example, the line voltage may be 208, and themeasured test point voltage may be 193.

– Using a multimeter, check ac phase-to-phase voltage between test points Z1, Z2, and Z3. The meas-ured voltage should be in the range 180-415 V ac.

Is there an ac power problem, i.e., no ac voltage?Yes No

003


004

Problem with the power coming into the frame.– Put the circuit breaker at the front of each power module in the Off (‘0’) position.– Unseat all power modules from the SEPBU so that they are out at least three inches (10 centimeters)

from the SEPBU power chassis.– Have customer put his wall circuit breaker in the On position.– Check the state of the customer circuit breaker.Does the customer circuit breaker stay in the On position?Yes No

005

– With main power switch in the Off (‘0’) position, disconnect ac line cord from SEPBU.– Check for a short condition between wires on the ac line cord.Is there a short condition on the ac line cord?Yes No

006

– Refer to "Removing the SEPBU Power Control Interface (PCI) Card" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations and Service Procedures.


007

Short detected in the ac line cord.– Refer to "Removing the SEPBU ac Line Cord" at IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.– Go to Step 077 on page 1-278 to verify fix.

008

– Repeat the ac voltage test from Step 002 on page 1-267.(Step 008 continues)

1-268 RS/6000 SP MAPs


008 (continued)Is ac present and within 200-415 V ac?Yes No

009

– Refer to "Replacing the SEPBU ac Line Cord" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures.


010

– One-at-a-time, install power modules, each time putting the circuit breaker at the front of the powermodule in the On (‘1’) position and repeating the ac voltage measurement from Step 002 onpage 1-267.

Was an ac voltage problem detected when any power module was reinstalled?Yes No

011

All power modules were installed with no ac problem detected.– Go to Step 077 on page 1-278 to verify the SEPBU.

012

– Refer to "Replacing the SEPBU Power Module" in IBM RS/6000 SP: Maintenance Information, Volume3, Locations and Service Procedures to replace the SEPBU power module.

– Return to Step 010 to install next power module and/or verify the replacement.

013

Possible problem with 12 V dc supervisor power.– Put main power switch in the On (‘1’) position.– Verify that the power module(s) circuit breaker(s) are in the On (‘1’) position.– Disconnect cables PDU-BH-P7 and PDU-BH-P8.– Check frame supervisor LEDs and SEPBU rear panel LED.Are any LEDs lit?Yes No

014

– Check for only one power module installed in the SEPBU.Is there only one power module in the SEPBU?Yes No

015

More than one power module in SEPBU.– Go to Step 032 on page 1-272 to verify fix.

016

Single power module in SEPBU.– Refer to "Replacing the SEPBU Power Module" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures to replace the SEPBU power module.(Step 016 continues)



016 (continued)– Go to Step 077 on page 1-278 to verify fix.

017

– Reconnect cables PDU-BH-P7 and PDU-BH-P8 one-at-a-time, checking frame supervisor LEDs andSEPBU rear panel LED for LEDs to go unlit, each time.

Do LEDs go unlit after reconnecting either cable.Yes No

018

No problem found.– Go to Step 077 on page 1-278 to recheck SEPBU.

019

Short isolated to a single supervisor harness.– Disconnect the shorted supervisor harness from the processor node(s) N00-BH-J7 and/or switch assem-

blies S00-BH-J2 (one at a time), until the short condition disappears, or the supervisor harness isentirely disconnected.

Does the short condition disappear by disconnecting the supervisor harness from a processornode(s) and/or switch assemblies?Yes No

020

– Replace this supervisor harness.– Go to Step 029 on page 1-271 to verify fix.

021

Short is inside a processor node or switch assembly.– Go to Step 022.

022

– Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures to place processor node or switch assembly into service position.

Is this a wide processor node, SPS or SPS-8 switch assembly?Yes No

023

Condition detected in a thin processor node or switch assembly.– Disconnect cable N00-NS-P101 or S00-SP-P101 at supervisor card, then check for a short

between pin 1 and 2 on component U102 (large power transistor) on supervisor card. U101 pin 1is marked.

Do you detect a short condition between U101 pins 1 and 2?Yes No

024

– Reattach cable N00-NS-P101 or S00-SP-P101 at supervisor card.– If this is a thin processor node, access the connector panel at rear of processor node (near

N00-BH-J7).(Step 024 continues)

1-270 RS/6000 SP MAPs


024 (continued)– Detach cable N00-SB-P102 or S00-SB-P102 at supervisor bus card, then check for a short

between pin 1 and 2 on component U102 (large power transistor) on supervisor card.Do you detect a short condition between U101 pins 1 and 2?Yes No

025

– Replace supervisor bus card.– Go to Step 029 to verify fix.

026

– Replace cable N00-NS-P101 or S00-SP-P101.– Go to Step 029 to verify fix.

027

– Go to Step 028.

028

– Refer to "FRU Removals and Replacements" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures to replace the appropriate part from the following list:

� Processor node supervisor card

� HiPS 2.0 switch assembly

� HiPS 3.0 switch supervisor card

� HiPS-LC8 switch supervisor card

� SPS switch supervisor card

� SPS-8 switch supervisor card

– Go to Step 029.

029

Component causing a short condition was replaced.– Make sure all cables are reconnected in processor node(s) switch assemblies and at SEPBU.– Check frame supervisor LEDs and SEPBU rear panel LED.Are any LEDs lit?Yes No

030

Another short exists in the 12 V dc distribution.– Go to Step 013 on page 1-269.

031


032




032 (continued)– Problem detected with the frame supervisor.

� Main power switch LED is On

� -OR- PDU rear panel LED is On,

� -BUT- all frame supervisor LEDs are Off.

– Refer to "Replacing the SEPBU Frame Supervisor Card" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures.

– Recheck the LED conditions listed in the above step.Are any frame supervisors lit?Yes No

033

– Refer to "Replacing the SEPBU Power Control Interface (PCI) Card" in IBM RS/6000 SP: Mainte-nance Information, Volume 3, Locations and Service Procedures to replace the SEPBU powerchassis.


034

Problem resolved.– Go to Step 077 on page 1-278 to verify fix.

035

Problem detected concerning Main Power Switch LED:

The main power switch LED is Off.

LED on Main Power Switch is not lit.– Check main power switch position.Is main power switch in On (‘1’) position?Yes No

036

– Put main power switch in On (‘1’) position.– Check conditions in table from Step 001 on page 1-265.Do any of these conditions exist?Yes No

037

No power problems. Go to “MAP 0570: End of Call” on page 1-357.

038


039


040


1-272 RS/6000 SP MAPs


040 (continued)– Check processor nodes for any Power (green) LEDs On or flashing. If no Power (green) LEDs are lit,

make sure that the circuit breaker at the front of at least one processor node or switch assembly is inthe On (‘1’) position.

Are green LEDs On or Flashing on any processor node(s) or switch assembly (excluding those dueto self-test)?Yes No

041

No 48 V dc power at processor nodes.– Check cable PDU-BH-P6 for an obvious problem.Does the cable appear to be okay?Yes No

042

– Fix the obvious cable problem.– Go to “MAP 0570: End of Call” on page 1-357.

043

– Disconnect cable PDU-BH-P6 from SEPBU.– With main power switch in On (‘1’) position, check for continuity between PDU-BH-P6 pin 2 and

pin 5, then check for continuity between pin 3 and pin 4.Is there continuity in both cases?Yes No

044

Problem with the main power switch.– Open the main power switch assembly.– Disconnect the white connector of the main power switch from the main power switch cable

PDU-SW-P1.– With main power switch in On (‘1’) position, check for continuity between the two pins of the

white main power switch connector.Is there continuity between these two pins?Yes No

045

– Refer to "Replacing the Main Power Switch or LED" in IBM RS/6000 SP: Mainte-nance Information, Volume 3, Locations and Service Procedures to replace the mainpower switch.

– Reconnect ac power and power on system.– Go to Step 036 on page 1-272 to verify fix.

046

– Replace main power switch cable PDU-BH-P6.– Go to Step 036 on page 1-272 to verify fix.

047





048

Main power LED card should be replaced; however, this action requires powering off all processor nodes.Are there other problems requiring this frame to be powered off?Yes No

049

– Schedule maintenance to replace main power LED card.– Go to “MAP 0570: End of Call” on page 1-357.

050

– Refer to "Replacing the Main Power Switch or LED" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures to replace the main power LED card.


051

System monitor log reports “dc Power Loss” for any power module(s).

Note: Under light power-loading conditions, SEPBU power modules may enable/disable their outputs tomaintain proper output. In this situation, you will see intermittent “dc Power Loss” conditions fromthe power modules. If this is a persistent problem, you may choose to put the circuit breaker ofone power module in the Off (‘0’) position.

– From the system monitor on the control workstation, open the “Frame Environment” window.– Allow the “Frame Environment” window a few minutes to refresh a few times. Correlate this display with

the system monitor log to obtain an accurate condition.– Check for “dc Power Loss” (red) condition for all power modules.

� If all power modules show “dc Power Loss”, then open “Global commands” window and power-off allprocessor nodes and/or switch assemblies in this frame.

� If only one power module shows “dc Power Loss”, then order another power module for use inisolating the failing part.

Does the system monitor indicate “dc Power Loss” (red) for any power module(s)?Yes No

052

No problem detected.– Go to “MAP 0570: End of Call” on page 1-357.

053

A “dc Power Loss” indicated for one or more power modules.Are all power modules indicating a “dc Power Loss” condition?Yes No

054

– Make a note of which power module(s) is indicating a problem.– Refer to "Removing the SEPBU Power Module" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures.(Step 054 continues)

1-274 RS/6000 SP MAPs


054 (continued)– Refer to "Replacing the SEPBU Power Module" in IBM RS/6000 SP: Maintenance Information,

Volume 3, Locations and Service Procedures to replace the SEPBU power module with the newpower module obtained in Step 051 on page 1-274.

Note: This step may be done while system is in use if the SEPBU has N+1 power modules andthere is never more than one module powered off or removed from the SEPBU at a time.

– Wait for the system monitor to update the “Frame Environment” window, then check for “dc PowerLoss” (red) indication.

Does the new power module give a “dc Power Loss” (red) indication?Yes No

055

Original power module is bad.– Replace the original power module(s).– Go to Step 077 on page 1-278 to verify fix.

056

– Reinstall the original power module.– Refer to "Replacing the SEPBU Frame Supervisor Card" in IBM RS/6000 SP: Maintenance Infor-

mation, Volume 3, Locations and Service Procedures.Does the same power module give a “dc Power Loss” (red) indication?Yes No

057


058



059

– From the “Frame Environment” window, power on the power modules by clicking on the On button cor-responding to the first power module.

– Wait for the system monitor to update the “Frame Environment”window, then check for “dc Power Loss”(red) conditions for all power modules.

Are all power modules still indicating a “dc Power Loss” (red) condition?Yes No

060

Some power modules are active.(Step 060 continues)



060 (continued)Are any indicating a “dc Power Loss” (red) condition?Yes No

061


062

Other problems exist.– Go to Step 054 on page 1-274.

063

Possible short in 48 V dc power distribution.– Go to Step 064

064

Possible short in 48 V dc power distribution.– Switch all processor node and switch assembly circuit breakers to Off (‘0’) position.– Disconnect dc distribution cables PDU-BH-P1, PDU-BH-P2, PDU-BH-P3, PDU-BH-P4, and PDU-BH-P5

at SEPBU. This isolates 48 V dc to the SEPBU only.– From the “Frame Environment” window, power on the power modules by clicking on the On button cor-

responding to the first power module.– Wait for the system monitor to update the “Frame Environment”window, then check for “dc Power Loss”

(red) conditions for all power modules.Are all power modules still indicating a “dc Power Loss” (red) condition?Yes No

065

– Probable short in dc distribution cables.– Go to Step 009 on page 1-259, to continue service.

066

Is the power control interface (PCI) card switch (in the rear of the SEPBU, next to the frame super-visor card) in the AUX position?Yes No

067

Probable dc short in the SEPBU.– Put the circuit breaker in the front of each power module in the Off (‘0’) position.– Unseat all power modules from the SEPBU so that they are out at least three inches (10 centime-

ters) from the SEPBU power chassis.– One-at-a-time, reseat the power module(s) and put the circuit breaker of the power module in the

On (‘1’) position.– Check frame supervisor green LED #1 and/or green LED #2 for an OFF condition.(Step 067 continues)

1-276 RS/6000 SP MAPs


067 (continued)Does frame supervisor green LED #1 and/or green LED #2 remain OFF following reseating ofa power module?Yes No

068

No problem detected for this power module.Have all power modules been reseated?Yes No

069

– Continue at last bullet of Step 067 on page 1-276.

070

All power modules reseated.– Go to Step 077 on page 1-278 to verify fix.

071

Problem detected.Is this the first power module to be reseated?Yes No

072

Problem with power module.– Refer to "Replacing the SEPBU Power Module" in IBM RS/6000 SP: Maintenance Informa-

tion, Volume 3, Locations and Service Procedures to replace the SEPBU power module.– Replace this power module.– Go to last bullet of Step 067 on page 1-276.

073

– Unseat this power module.– Reseat a different power module.– Put the circuit breaker of the reseated power module in the On (‘1’) position.– Check frame supervisor green LEDs #1 and #2 for an OFF condition.Does frame supervisor green LED #1 and/or green LED #2 remain OFF following reseating ofa power module?Yes No

074

Problem with original power module.– Go to last bullet of Step 067 on page 1-276.

075





076

Probable problem related to PCI function.– Go to “MAP 0470: SEPBU Power Control Interface” on page 1-280.

077

SEPBU has been serviced.– Make sure all cables are reconnected at the rear of the SEPBU.– Make sure the customer circuit breaker is in the On position.– Make sure all power modules are installed in the SEPBU power chassis.– Make sure the circuit breaker at the front of all power modules is in the On (‘1’) position.– Make sure the main power switch is in the On (‘1’) position.– Go to Step 078.

078

– From the “Frame Environment”window, make sure all installed power module indicator(s) show goodstatus (green).

– From the “Frame Environment”window, check frame supervisor green LEDs and make sure both LEDsare constant On.

Are both conditions met?Yes No

079

Problem(s) still exists.– Go to Step 001 on page 1-265 to continue service.

080


081

Frame supervisor has detected a temperature beyond an acceptable range for the system.– Check the air filter area (behind the front skirt) and around the SEPBU for obvious airflow blockage or

external source of heat.Is there obvious blockage or external source of heat?Yes No

082

Frame supervisor card may be reporting incorrect temperature.– Refer to "Replacing the SEPBU Frame Supervisor Card" in IBM RS/6000 SP: Maintenance Infor-

mation, Volume 3, Locations and Service Procedures.– Go to Step 084 on page 1-279 to verify fix.

083

– Remove blockage or source of heat from area.– Go to “MAP 0570: End of Call” on page 1-357.

1-278 RS/6000 SP MAPs


084

Problem resolved.– Perform "Verification Test for Supervisor Bus" in IBM RS/6000 SP: Maintenance Information, Volume 3,


085

– Go to “MAP 0110: Supervisor Subsystem” on page 1-10 to continue service.

086



MAP 0470: SEPBU Power Control Interface

MAP 0470: SEPBU Power Control Interface001

Possible problem with the Power Control Interface.– Locate the Power Control Interface (PCI) card on the SEPBU rear panel.– Note where any power control cables are connected at the PCI card before continuing.– Note the position of the local/auxiliary switch.Is the switch in the local position?Yes No

002

Does the customer have power control interface cables installed?Yes No

003

– Put the local/auxiliary switch in the local position.– Check frame supervisor green LED #2 (dc OK) for a solid ON condition.Does frame supervisor green LED #2 (dc OK) show a solid ON condition?Yes No

004

– Go to Step 007

005


006


007

Possible problem with the PCI card.– Put the main power switch in the Off (‘0’) position.– Refer to "Replacing the SEPBU Power Control Interface (PCI) Card" in IBM RS/6000 SP: Maintenance

Information, Volume 3, Locations and Service Procedures.– Ensure the PCI card switch is in the original position.– Put the main power switch in the On (‘1’) position.– Check frame supervisor green LED #2 (dc OK) for a solid ON condition.Does frame supervisor green LED #2 (dc OK) show a solid ON condition?Yes No

008

– Refer to "Replacing the SEPBU Frame Supervisor Card" in IBM RS/6000 SP: Maintenance Infor-mation, Volume 3, Locations and Service Procedures.

– Check frame supervisor green LED #2 (dc OK) for a solid ON condition.(Step 008 continues)

1-280 RS/6000 SP MAPs


008 (continued)Does frame supervisor green LED #2 (dc OK) show a solid ON condition?Yes No

009

Problem is in SEPBU power chassis.

DANGER

High voltage present. Perform “Lockout/Tagout Procedure for PDU” on page 1-2or “Lockout/Bagout Procedure for PDU” on page 1-3 to remove all power to theframe.

– Power off system.– Refer to "Replacing the SEPBU Power Control Interface (PCI) Card" in IBM RS/6000 SP:

Maintenance Information, Volume 3, Locations and Service Procedures to replace theSEPBU power chassis.

– Reconnect ac power and power on the system.– Go to Step 023 on page 1-282 to verify fix.

010


011


012

Remote power control cables are installed and local/auxiliary switch is in the auxiliary position.– Trace power control cables back until you find the first remote unit that is powered on or in the local

position.Is this remote unit powered on?Yes No

013

– Power on this remote unit.– Check frame supervisor green LED #2 (dc OK) for a solid ON condition.Does frame supervisor green LED #2 (dc OK) show a solid ON condition?Yes No

014


015




016

– Check the power control cable from this powered remote unit to the next unpowered unit.– If there is an obvious problem, such as a loose cable, fix the obvious problem; otherwise, replace this

power control cable.Are you able to power on this unit?Yes No

017

There may be a problem with this unpowered unit's power control interface.Is this unit a RS/6000 SP?Yes No

018

– Service the unit using the appropriate documentation.– As a temporary work-around, you may enable frames by putting their local/auxiliary switch

in the local position.

019

First failing unit is a RS/6000 SP.Is this the same frame that you were originally servicing in this PCI MAP?Yes No

020

– Go to Step 001 on page 1-280 to service this frame.

021


022

Unit is powered on.– Go to Step 023.

023

The SEPBU frame supervisor LED #2 is On.– Reconnect any power control cables at the PCI card as recorded in Step 001 on page 1-280.– Go to Step 077 on page 1-278 to verify fix.

1-282 RS/6000 SP MAPs

MAP 0480: Open in 48 Volt DC Distribution

MAP 0480: Open in 48 V dc DistributionProblem in 48 V dc power distribution to processor node(s) or switch assemblies.

001

Attention: The following step requires powering off up to three additional processor nodes or one addi-tional switch assembly. If the switch feature is present, it will interrupt jobs on all switch features attachedto the switch assembly on this frame.

Attention: If a 604 or 604e high node is present in this frame, it is possible that the 48 Volt power distrib-ution is spread across more than one power harness. Check physical connections from circuit breaker(s)to 48 V bulkhead connectors for actual power distribution.

Replacing the power harness requires powering off up to four units. The sets are as follows:

PDU-BH-P1: Frame slots 1, 2, 3, 4PDU-BH-P2: Frame slots 5, 6, 7, 8PDU-BH-P3: Frame slots 9, 1ð, 11, 12PDU-BH-P4: Frame slots 13, 14, 15, 16PDU-BH-P5: Frame slot 17

– If the other processor node(s) or switch on this power harness are in use, schedule time with the cus-tomer where the entire set can be removed from the active configuration. If the customer decides todefer maintenance, go to “MAP 0570: End of Call” on page 1-357; otherwise, continue this step.

– Have customer remove the set of processor node(s) or switch assemblies from the active configuration.– Put circuit breakers at front of the processor node(s) or switch assemblies in the Off (‘0’) position.– Replace the appropriate power harness PDU-BH-P1, PDU-BH-P2, PDU-BH-P3, PDU-BH-P4, or

PDU-BH-P5.– After the power harness is replaced, put circuit breakers at front of the processor node(s) or switch

assemblies in the ON (‘1’) position.– Check Power (green) LED of the original processor node(s) or switch assemblies for an ON condition.Is the Power (green) LED OFF for the original processor node(s) or switch assemblies?Yes No

002


003

Problem in the SEPBU or Power Distribution Unit dc section.

Attention: The following steps require interruption of all processor node(s) and/or switch assemblies in theframe. If the switch feature is present, it will interrupt jobs on all switches attached to the switch assem-blies in this frame.

– Schedule time with customer where the frame can be powered off. If the customer decides to defer

maintenance, go to “MAP 0570: End of Call” on page 1-357; otherwise continue this step.– Put main power switch at front of frame in the Off (‘0’) position.



DANGER


Does this frame contain a power distribution unit (PDU)?Yes No

004

Frame contains a SEPBU.– Remove power modules and frame supervisor card from power chassis.– Replace SEPBU power chassis.– Reinstall frame supervisor card and power modules.– Go to Step 006 to resume service.

005

Frame contains a power distribution unit.– Open Power Distribution Unit dc section.– Find the tailgate cable associated with the failing processor node(s) in the following table:

PDU-BH-P1: Frame slots 1, 2, 3, 4PDU-BH-P2: Frame slots 5, 6, 7, 8PDU-BH-P3: Frame slots 9, 1ð, 11, 12PDU-BH-P4: Frame slots 13, 14, 15, 16PDU-BH-P5: Frame slot 17

– Replace the appropriate tailgate cable PDU-BH-J1, PDU-BH-J2, PDU-BH-J3, PDU-BH-J4, orPDU-BH-J5 to the bus bars.

– Reinstall cover of Power Distribution Unit dc section.– Go to Step 006.

006

– Reconnect power to the system.– Put main power switch at front of frame in the On (‘1’) position.– Put circuit breakers at the front of the processor node(s) and/or switch assemblies in the On (‘1’) posi-

tion.Do the processor node(s) or switch assemblies power on?Yes No

007


008

Problem resolved.Does this frame only contain switch assemblies?Yes No

009

Frame contains processor node(s).(Step 009 continues)

1-284 RS/6000 SP MAPs


009 (continued)– Check the 3-digit LEDs for the processor nodes to make sure they are all IPLing okay.Do all processor nodes IPL okay?Yes No

010

Processor nodes not IPLed.– Go to “MAP 0100: Start of Service Call” on page 1-4 to continue service.

011

Processor nodes have IPLed okay.Does this frame contain a switch assembly?Yes No

012


013

– Go to Step 014.

014

Frame contains switch assemblies.– Go to Step 101 on page 1-350 of the “MAP 0540: Switch Function” on page 1-322 to verify fix.


MAP 0490: Network Problem

MAP 0490: Network ProblemThere are several communication adapters supported for node-to-node (network) communication,including:

Ethernet Thin (Coax) Mandatory: Used for installation/boot LAN

Ethernet Thick Mandatory: Used for installation/boot LAN

Ethernet TTP Mandatory: Used for installation/boot LAN

Switch Adapter Application high-speed node-to-node communication

Token-Ring Customer use

FDDI (Fiber Optic) Customer use

001



– Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures for placing or removing processor node(s) in/from service position.– Refer to "Viewing Switch Partitions" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations

and Service Procedures for locating and fencing/unfencing nodes within a switch partition.– In order to service the LAN, you must determine the topology (wiring) of the LAN. Contact the System

Administrator to obtain a copy of the machine's Ethernet topology. The topology tells you whichprocessor nodes are connected together inside the frame, and where group(s) of processor nodes areconnected outside the frame.

– Perform "Checking Network (LAN) Status" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures.

– Go to Step 002.

002

– Based on the adapter name, use the following table to continue service:

1-286 RS/6000 SP MAPs

MAP 0490: Network Problem

Adapter Name Network Type Action

en Ethernet Thin,Thick, TTP

Go to “MAP 0500: Ethernet LAN” on page 1-288.

css Switch Go to “MAP 0510: Switch Assembly” on page 1-294.

tr Token Ring Use the Diagnostic Information for Multiple Bus Systems (SA38-0509) andAdapters, Devices and Cable Information for Multiple Bus Systems(SA38-0516) or reference the related publications in the bibliography inRS/6000 SP: Maintenance Information, Volume 1.

fi FDDI (FiberOptic)

Use the Diagnostic Information for Multiple Bus Systems (SA38-0509) andAdapters, Devices and Cable Information for Multiple Bus Systems(SA38-0516) or reference the related publications in the bibliography inRS/6000 SP: Maintenance Information, Volume 1


MAP 0500: Ethernet LAN

MAP 0500: Ethernet LANEach processor node has at least one Ethernet LAN connection:

� Standard RS/6000 SP system (and coexistence 9076 SP1 system):

Thin processor nodes: Integrated Ethernet connection (N00-BH-J5). Connects this processornode to the customer’s LAN.

Important Note for Thin Nodes with TTP

The Ethernet riser card port on the thin node (and thin node 2) mustbe set to the “thick” position. See “Setting the Ethernet Riser CardJumpers” in the Removal and Replacement section of 7012POWERstation and POWERserver: Install and Service Guide(SA23-2624) for details.

Wide processor nodes: Micro Channel Ethernet connection (N00-MC-0/1). Connects this processornode to the customer’s LAN.

604 or 604e high processor nodes:Micro Channel Ethernet connection (N00-MC-1/1). Connects this processornode to the customer’s LAN.

SP-Attached Server S70 and S7APCI Ethernet connection (ent0). connects this processor node to the cus-tomer's LAN.

332 MHz SMP or POWER3 SMP nodes:Integrated Ethernet connection (not riser card). Connects this processornode to the customer’s LAN.

� Additional Ethernet cards may be present in the I/O adapter slots.

Items covered in this MAP are for cabling with coax (BNC) connections or TTP connections:

� Integrated Ethernet card

� Micro Channel Ethernet card

� PCI Ethernet card

� Ethernet cabling inside the RS/6000 SP frame

� Ethernet connections outside the RS/6000 SP frame.

� Ethernet transceiver (TTP)

� MAU (TTP)

001

The factory default wiring topology for coax is similar to the following:

Terminator → Customer's LAN→ (Nð2 → Nð1) → (Nð3 → Nð4) → (Nð6 → Nð5) → (Nð7 → Nð8)→ (N1ð → Nð9) → (N11 → N12) → (N14 → N13) → (N15 → N16)

→ Terminatorwhere: N## refers to processor node number,

Processor node pairs are in '()'s.

The wiring topology for TTP is similar to the following figure:

1-288 RS/6000 SP MAPs


1 2

3

Hub

ControlWorkstation

Wide Node

ThinNode

Ethernet Riser

TPTP

TP

Ethernet MCA

Ethernet Bus MCA

CHIPCOM10 Base

Tranceiver

TPTranceiver

TPTranceiver

EthernetTranceiver

Cable

Figure 1-28. Typical Ethernet TTP Topology

–

Notes:

1. Actual customer topologies may differ from the diagrams above.

2. Both ends of the coax network must have a terminator.

3. If a problem is affecting multiple processor nodes, you need to know the topology (wiring) of theLAN to perform service. The topology should be shown on a worksheet attached in this manual. Anychanges to the topology should be updated on this worksheet. If necessary, you may hand trace theEthernet cabling in the system, where possible, to determine the topology. Keep in mind that a cus-tomer's configuration may consist of fewer processor nodes per LAN than the factory default shownabove.

– Go to Step 002.

002

– Note which processor node(s) indicate a problem.– Use the following table and the Ethernet LAN cabling worksheet from Step 001 on page 1-288 to con-

tinue service:


1 Problem affecting all poweredprocessor nodes on a singleEthernet LAN.


2 Problem affecting an individualthin/wide processor node’s inte-grated Ethernet connection.


3 Problem affecting an individualprocessor node I/O adapter cardconnection.




003

Network problem.– Check cabling connections along affected network and terminators at both ends of the LAN for any

cabling/connector problems, such as poor connections, damaged or missing components.Are there any cabling/connector problems?Yes No

004

– Attempt to isolate failing cable(s), terminators, MUX connector, MAU connector, or T-adaptors byperforming "Ethernet LAN Isolation Procedure" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures and return to this step.

Did the LAN isolation task locate a failing part?Yes No

005

Could not locate failing part.– Check system monitor on control workstation for continuing communication problem.Is there still a communication problem?Yes No

006


007


008

– Go to Step 009.

009

– Replace or reseat the failing part.– Check the topology “Frame” window on the control workstation for indication that the Ethernet LAN

problem has been resolved (Ethernet LAN connections for all powered processor nodes show greenstatus).

Note: Refresh of this window may take up to five minutes.

Does the topology “Frame” window indicate green status for Ethernet LAN connections to allprocessor nodes that are powered on?Yes No

010


011

Problem resolved.(Step 011 continues)

1-290 RS/6000 SP MAPs



012

Problem affecting an individual thin processor node’s integrated Ethernet connection.– Open the rear cover of the RS/6000 SP frame, and locate the proper processor node.– Use the following table to reseat or replace components.


1 T-adaptor (coax) or TTP transceiver(N00-BH-J5)

1. Check the connection at the T-adaptor (coax) orTTP transceiver on the integrated Ethernet card(N00-BH-J5), and tighten as necessary. For TTP,also check cable and connection at the TTP HUB,and verify correct plug position.

2. Verify that internal and external cables are con-nected to the correct integrated or Micro ChannelEthernet card, respectively.

3. If no problem was found continue at Priority 2; oth-erwise, verify fix at Step 016 on page 1-292.

2 T-adaptor (coax) or TTP transceiver(N00-BH-J5)

Replace component. If no problem is found, go to Pri-ority 3.

3 (Planar power problem) 1. From the control workstation, reset this processornode.

2. Check 3-digit LEDs for any non-blank conditionduring IPL.

3. If the 3-digit LEDs are always blank, go to Step 006on page 1-51 to fix the planar power problem. Oth-erwise, continue at Priority 4.

4 Ethernet riser card 1. Put circuit breaker(s) at front of processor node inthe Off (‘0’) position, then remove processor nodefrom frame.

2. Remove processor node cover.3. If a 332 MHz SMP or POWER3 SMP node, go to

Priority 5. If other node, continue with next step.4. Replace the integrated Ethernet riser card.5. Continue at Step 013.

5 I/O planar card 1. Replace the I/O planar card. Make sure that allcards and cables are reinstalled properly followingreplacement.

2. Continue at Step 013.


013

Component reseated or replaced.– Reinstall processor node top cover.– Reinstall processor node in frame. Make sure to reconnect cables at back of processor node.– Put circuit breaker(s) at the front of processor node in the On (‘1’) position.– Go to Step 016 on page 1-292 to verify fix.



014

Problem affecting individual processor node(s) I/O adapter card Ethernet connection.– Verify with customer that jobs on this processor node are completed.– SP-attached servers (RS/6000 Machine Types 7017 S70 and S7A), consult the RS/6000 Enterprise

Servers S70 and S7A Installation and Service Guide to perform the required service action and return tothis MAP Step 016.

Note: Before disconnecting cables or performing service actions on an SP-attached server, perform"Decoupling and Coupling Code for SP-Attached Servers" in RS/6000 SP: Maintenance Informa-tion, Volume 3.

– Open the rear cover of the RS/6000 SP frame, and locate the proper processor node.– Use the following table to reseat or replace components:


1 T-adaptor (coax) or TTP transceiveron Micro Channel Ethernet card

1. Check the connection at the T-adaptor (coax) or TTPtransceiver on the Micro Channel Ethernet card andtighten as necessary.

2. If no problem was found continue at Priority 2; other-wise, verify fix at Step 016.

2 (Planar power problem) 1. From the control workstation, reset this processornode.

2. Check 3-digit LEDs for any non-blank conditionduring IPL.

3. If the 3-digit LEDs are always blank, go to Step 006on page 1-98 to fix the planar power problem. Oth-erwise, continue at Priority 3.

3 Ethernet adapter card 1. Put circuit breaker at front of processor node in theOff (‘0’) position. If this is a thin node, removeprocessor node from frame.

2. Remove processor node cover or open drawer.3. Replace the Ethernet adapter card.4. Continue at Step 015.


015

Component reseated or replaced.– If this is a thin/wide processor node, reinstall processor node top cover(s).– Reinstall processor node in frame. Make sure to reconnect cables at back of processor node.– Put circuit at the front of processor node in the On (‘1’) position.– Go to Step 016 to verify fix.

016

– If you just replaced the I/O planar on a thin/wide processor node or the Ethernet adapter card, thenperform "Updating the Ethernet Hardware Address" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures before continuing.

– If you just reseated or replaced a Ethernet adapter card, the customer must log into the processornode, using the TTY console. Log in as “root:”.

– Enter one of the following commands:

ifconfig en0 up

1-292 RS/6000 SP MAPs


ifconfig en1 up

– From control workstation, issue ping command to this processor node.

ping nodename

– Check for response(s) indicating communication.Does ping command indicate communication with this processor node?Yes No

017

– Put circuit breaker at front of processor node in the Off (‘0’) position, then remove processor nodefrom frame.

– Remove processor node cover.– Return to appropriate table in Step 012 on page 1-291 or Step 014 on page 1-292 to continue

service.

018

Communication has been established with the Ethernet connection for this processor node.Are there other processor nodes with an Ethernet connection problem?Yes No

019


020



MAP 0510: Switch Assembly

MAP 0510: Switch AssemblyThe switch features consist of the following components:

� Switch adaptor cards (one per processor node), � Switch assembly� Switch internal data cables (one per processor node) (HiPS 2.0 only)� Switch internal clock cables (may not be required)� Switch power cable� Switch wrap plugs (male 46G5619 and female 46G5620 for HiPS, male 77G0818 and female

46H9688 for SPS). Refer to Figure 1-31 on page 1-299 and Figure 1-32 on page 1-300 for views ofthese wrap plugs.

� Switch external data cables (multi-frame only)� Switch clock interposers (multi-frame only; may not be required) (HiPS 2.0 only)

Attention:

1. Switch data plug/jack connector pins are easily bent. Check for bent pins on male plugs or bent pinguides on female jacks if a cable is difficult to plug. Problems with bent pins or pin guides can propa-gate to new plugs/jacks if not corrected first.

2. All connected switch assemblies must be running from the same master clock. If the switch assem-blies have not been set properly, all processor nodes in a logical frame will be uninitialized. Refer to"Selecting Appropriate Switch Clocks" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for these procedures.

3. Switch clock cables are fragile. Do not allow cables to bend too sharply or the cable may be perma-nently damaged.

Refer to Figure 1-29 on page 1-296 and Figure 1-30 on page 1-297 for high-level views of the RS/6000SP High Performance Switch (HiPS) and Scalable POWERparallel Switch (SPS) assemblies.

Switch Connection Types

Standard Node Processor nodes in 9076 SP frames are attached to the switch assemblies withswitch cables.

Dependent Node Switch adapter resides outside of the 9076 SP frame. Each dependent node is asingle SP Switch Router Adapter in the 9077 Switch Router. There can be severaldependent nodes in each SP Switch Router.

Switch-to-Switch Connections between switch assemblies.

Switch Assembly Types

HiPS 2.0 Has separate squared clock connectors (J35 and J36) at bulkhead. J35 providesclocks for processor nodes. J36 provides clock connections for switch-to-switch; ina system with HiPS 3.0 assemblies, clock interposers are used to route data cablesJ3, J5, and J7 to J36.

FRUs include: Fans, circuit breaker, LED card, complete assembly.

HiPS 3.0 All clocks are distributed through data cables (no J35 or J36). External clock inputsare selected from J3, J5, or J7.

FRUs include: Fans, circuit breaker, LED card, switch supervisor card, switchpower card, switch clock card, complete assembly.

1-294 RS/6000 SP MAPs


HiPS-LC8 Has only 8 ports (and cannot connect outside of a single frame). All clocks aredistributed through data cables.

FRUs include: Fans, circuit breaker, LED card, switch supervisor card, switchpower card, switch planar.

SPS All clocks are distributed through data cables. External clock inputs are selectedfrom J3, J4, or J5.

FRUs include: Fans, circuit breaker/LED card, switch supervisor card, switch powercard(s), inner chassis cable, front chassis cable, complete assembly.

SPS-8 There are only 8 ports. All clocks are distributed through data cables.

FRUs include: Fans, circuit breaker/LED card, switch supervisor card, switch powercard(s), inner chassis cable, front chassis cable, complete assembly.



J1

CB

1 2J1

03

J101

Switch Control Harness

Power Bussbars

J101

J102

Fan

1F

an 2

Fan

3F

an 4

Fan

5

Sw

itch

Pow

er C

ard

J902

J901

6 7J9

03

Sup

ervi

sor

Bus

Car

d

J2+

12 V

dc

Sup

ervi

sor

Com

m P

ort

+48

V d

c

Sw

itch

Sup

ervi

sor

Car

d

Gre

en

LED

s

Yel

low

J5J3

J1 J2

GO

RE

CLK

VC

LK

J4S

witc

hC

lock

Car

d

Sw

itch

Pla

nar

J4 ----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

J33

J34

J3

+5 V

dc

-5 V

dc

(HP

S 3

.0

only

)

Figure 1-29. High Performance Switch (HiPS) Assembly High-Level Diagram

1-296 RS/6000 SP MAPs


J2

CB

Fan

5

Fan

2

Fan

1

Fan

4

Fro

nt C

hass

is

Cab

leIn

ner

Cha

ssis

C

able

Cup

Gui

de

Fan

3

Sw

itch

Pow

er

Sup

ply

2

Sw

itch

Pow

er

Sup

ply

1

J35

J34

J33

P6

P9

P8

P7

P5

P4

P1

P2

P3

P1

P2

P3

P4

P5

P6

Sup

ervi

sor

Bus

Car

d

J1

+12

V d

c

+48

V d

c

Sw

itch

Sup

ervi

sor

Car

d

Gre

en

LED

s

Yello

w

Sw

itch

Pla

nar

J2J3

3--

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

----

--J3

1J4

J32

J3

J1J3

4

(On External Bulkhead)

(On Planar)+5

V d

c

+5 V

dc

-5 V

dc

-5 V

dc

Figure 1-30. Scalable POWERparallel Switch (SPS) Assembly High-Level Diagram

There are two LEDs on the front of each switch assembly. For quick reference, their definitions are asfollows:



Environment (Yellow)

Off No environmental problems detected by switch supervisor card.

On Warning of environmental condition out of nominal range. Preventative Maintenance shouldbe scheduled for this switch.

Flashing Serious environmental condition detected; power shut off.

Power (Green)

Off No 48 V dc power available at switch assembly.

Flashing Power available at switch assembly, but switch logic is Off.

On Power available at switch assembly, and logic is On.

Note: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for placing or removing the switch assembly in/from serviceposition.

001

– Read the following warning and then follow steps to ensure continuity of customer’s jobs in the queue.

Attention: Servicing a processor node or switch assembly will interrupt customer usage of theprocessor node and the remainder of the high-performance switch network. If the high-performanceswitch feature must be replaced in a multi-frame system, refer to "Removing and Restoring SwitchResources" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and ServiceProcedures, for information on isolating the switch assembly. The high-performance switch network cannot be re-initialized until the switch assembly is physically isolated from the rest of the HiPS network.

Attention: It is possible that the customer has modified switch cabling from standard configurations;therefore, be careful about relying on node and frame information. Any connector jack numbers will becorrect regardless of the customer's cable configuration, so you may trace the cabling from the jacknumber if necessary.

– Have customer complete all active parallel jobs, then remove the switch feature from the active config-

uration. Refer to "Removing and Restoring Switch Resources" in IBM RS/6000 SP: Maintenance Infor-mation, Volume 3, Locations and Service Procedures, for these procedures.

– Check for system monitor errors indicating environmental problems with the switch feature. These canbe viewed by issuing the appropriate command from the control workstation:

pg /var/adm/spmon.log (For SSP code levels 1.00 - 1.01)errpt -a -N sphwlog | pg (For SSP code levels 1.02 and higher)

In a frame with processor nodes, entries for the switch will refer to “node17” or “slot17”. In a multi-switch frame, switches will be listed as even slot addresses.

Note: Refer to Step 001 on page 1-4 for more information on the pg command.

– Determine the switch assembly type (see page 1-294).– The following table contains a prioritized list of conditions. Find the first condition that describes your

problem, then perform the associated action:

1-298 RS/6000 SP MAPs



1 Environmental problems

� Errpt: “Failure...”� Log: “Shutdown: Voltage...”� Log: “Shutdown: Fan...”� Log: “Shutdown: Temperature...”

� Errpt: “Warning...” � Log: “Warning:...”� Environment (Yellow) LED- on or flashing

Go to “MAP 0520: Switch AssemblyEnvironment” on page 1-301.

2 Power problem

� (Power) Green LED- off or flashing� Switch has no power� All voltages at zero

Go to “MAP 0530: Switch AssemblyPower” on page 1-313.

3 Switch function problem

� Error(s) in /var/adm/SPlogs/css/out.top(see note)

� Problem(s) with switch_responds� Problem(s) returned from errpt -a -N Worm� Problem(s) detected by CE/customer.

Go to “MAP 0540: Switch Function” onpage 1-322.

Notes:

1. out.top is located in the primary node. To find the primary node, issue:

Eprimary

2. Verify that the file has a valid (recent) timestamp using:

ls -l

Male Wrap PlugFemale Wrap Plug

P/N 48G5620 P/N 48G5619

Figure 1-31. HiPS Wrap Plugs



Male Wrap PlugFemale Wrap Plug

P/N 46H9688 P/N 77G0818

Figure 1-32. SPS Wrap Plugs

Notes:

1. SPS advanced diagnostics use the 10 meter data cable provided by the SPS feature bill of material.

2. Advanced cable wrap tests will not run successfully for 15- and 20-meter SPS data cables. If 15- or20-meter data cables are used, swap/change the suspected cable.

1-300 RS/6000 SP MAPs

MAP 0520: Switch Assembly Environment

MAP 0520: Switch Assembly EnvironmentNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures for placing or removing the switch assembly in/from serviceposition.

001

– System monitor log reports “Warning”, “Shutdown”, or “Failure” message associated with switchassembly.

Does message indicate “Shutdown” or “Failure”?Yes No

002

Message is a warning only.Does this same message occur on other switch assemblies or processor nodes?Yes No

003

– Verify that the customer is not experiencing problems with this switch assembly. If no prob-lems are being experienced, or this is an N+1 fan or power supply failure, then no imme-diate service is required, and can be deferred until a later date. If problems are beingexperienced, service can be performed now by returning to Step 001 and treating thismessage as a “Shutdown” or “Failure” message.

004


005

A serious environmental condition has been detected in the switch assembly.

Note: If service action has just been completed on this switch assembly, check for loose cables orshorted conditions in this component.


Condition Action

“...P48OK...” Go to “MAP 0530: Switch Assembly Power” onpage 1-313.

“...shutdownP5...”“...shutdownP12...”“...shutdownN5...”




“...PS1Fail...”“...PS2Fail...”“...P33High...”“...P33Low...”“...voltP33Range...”“...PSFuseGood...”




006


� Voltage out of range: +5 V “shutdownP5”� Voltage out of range: +12 V “shutdownP12”� Voltage out of range: −5 V “shutdownN5”

– Have the customer remove the switch assembly from the active configuration and power off the switchassembly.

– Put the switch into service position. Refer to "Service Position Procedures" in IBM RS/6000 SP: Mainte-nance Information, Volume 3, Locations and Service Procedures.

– Check cable conditions at switch supervisor card S00-SP-J102 and power card S00-PC-J903. Checkcondition of cable wires, especially J903 pin A5 to J102 pin A3, and the appropriate connection (basedon message) shown below:

Voltage Power Card - J903 Switch Supervisor - J102

+5 V S00-PC-P903 pin B2 S00-SP-P102 pin A6

+12 V S00-PC-P903 pin A3 S00-SP-P102 pin A5

−5 V S00-PC-P903 pin A1 S00-SP-P102 pin A7

– Leave cable disconnected at switch power card.Does the switch supervisor control cable appear to be okay?Yes No

007

Problem with switch supervisor control cable (S00-SP-P102).– Go to Step 019 on page 1-304, Priority 4, to replace cable.

008

– Disconnect S00-PC-P902 at power card.– Using a digital multimeter, measure resistance between the appropriate pins.– Compare results with values in this table:




+5 V(note) Pin 1(note) Pin 2 (black)(note) 1K - 5M(note)

+12 V Pin 3 Pin 2 (black) 1K - 5M

−5 V(note) Pin 5(note)Pin 7

Pin 2 (black)(note)Pin 2 (black)

2 - 20(note)2 - 20

Note:

HiPS-LC8 switch assembly has only +5 V (pin 1) and -5 V (pin 5).

Is the measured resistance(s) in the acceptable range?Yes No

009

– If this is an HiPS-LC8 switch assembly, skip directly to Step 010 on page 1-303 (Step 009 continues)

1-302 RS/6000 SP MAPs


009 (continued)– Disconnect S00-CL-P5 at switch clock card.– Repeat resistance measurement from Step 008 on page 1-302.Is the measured resistance(s) in the acceptable range?Yes No

010

– Check the following for shorts or opens:

� Metal busbars on switch planar (HiPS 2.0 or HiPS 3.0 only)

� Cable S00-CL-P5 (HiPS 2.0 or HiPS 3.0 only)

� Cable S00-PC-P902

� Cable S00-PC-P11 (HiPS-LC8 only)

– Repair or replace cables as required.– Repeat resistance measurement from Step 008 on page 1-302.Is the measured resistance now in the acceptable range?Yes No

011

Problem is in switch planar.– If this is an HiPS 2.0 or HiPS 3.0, replace switch assembly.– If this is an HiPS-LC8, replace switch planar.– Go to Step 030 on page 1-307 to verify fix.

012


013

– If this is an HiPS 2.0, replace switch assembly.– If this is an HiPS 3.0, replace the switch clock card.– Go to Step 030 on page 1-307 to verify fix.

014

– Reconnect cable S00-PC-P903 at switch power card.– Repeat resistance measurement from Step 008 on page 1-302.Is the measured resistance(s) in the acceptable range?Yes No

015

– Disconnect cable S00-SP-P102 at switch supervisor card.– Repeat resistance measurement from Step 008 on page 1-302.(Step 015 continues)



015 (continued)Is the measured resistance(s) in the acceptable range?Yes No

016

– Problem is in the switch supervisor control cable (S00-SP-P102).– Go to Step 019, Priority 4, to replace cable.

017

– If this is an HiPS 2.0, replace switch assembly.– If this is an HiPS 3.0 or HiPS-LC8, replace the switch supervisor card.– Go to Step 030 on page 1-307 to verify fix.

018

– If this is an HiPS 2.0, replace switch assembly.– If this is an HiPS 3.0 or HiPS-LC8, replace the switch power card and switch supervisor card.– Go to Step 030 on page 1-307 to verify fix.

019


� Warning Fan: “fanwarning1”, “fanwarning2”, ..., “fanwarning5”


– Have customer remove the switch assembly from the active configuration and power off the switchassembly.

– If this is an HiPS switch, place the switch into service position. Refer to "Service Position Procedures"in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures.

– If this is an SPS or SPS-8 switch, turn off the circuit breaker. Unplug cables connected to J1 and J2 atthe rear of the switch assembly. Then remove the front panel assembly from the inner chassis.

– Use the following table to reseat or replace components:

1-304 RS/6000 SP MAPs



1 Fan 1, 2, 3, 4 or 5 1. Check specified fan(s) for blockage or loose cableconnection.

2. Fix any obvious problem(s). If none are found, con-tinue at Priority 2.


2 Fan 1, 2, 3, 4 or 5 1. Replace fan(s) as described in "FRU Removals andReplacements" in IBM RS/6000 SP: MaintenanceInformation, Volume 3, Locations and Service Proce-dures.


3 Switch supervisor card or HiPS 2.0assembly

1. If this is an HiPS 3.0, HiPS-LC8, SPS, or SPS-8,replace the card; otherwise, replace the HiPS 2.0assembly.


4 Switch supervisor control cable 1. If this is an HiPS or HiPS-LC8, replace the cable.Refer to Figure 1-33 on page 1-305, for cable con-nections. If this is an SPS or SPS-8, replace thecable. Refer to Figure 1-34 on page 1-306, for cableconnections.



Switch Supervisor Control Cable

F1 (Fan 1)2 x 2

PC-P903(Power Card)

2 x 5

F2 (Fan 2)2 x 2

F3 (Fan 3)2 x 2

F4 (Fan 4)2 x 2

F5 (Fan 5)2 x 2

CL-P4(Clock Card)

2 x 5

LD (LED Card)4 x 1

SP-P102(Switch SV Card)2 x 20

Figure 1-33. HiPS Switch Supervisor Control Cable



P2 (Fan 1)2 x 2P6 (Power Card)

2 x 1

P4 (Power Card)2 x 1

Front Chassis CableInner Chassis Cable

P5(Switch SV Card)

2 x 20

P1P3

P3 (Fan 2)2 x 2

P4 (Fan 3)2 x 2

P5 (Fan 4)2 x 2

P6 (Fan 5)2 x 2

P7, P8 (CB) P9 (LED)

Figure 1-34. SPS Inner Chassis and Front Chassis Cables

020

Component replaced or reseated.– Reconnect all cables inside the switch assembly.– If this is an SPS or SPS-8, install front panel assembly and reinstall front retaining screws.– If this is an HiPS or HiPS-LC8, replace the switch from service position. Refer to "Service Position

Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-dures.

– Connect only power (J1) and supervisor (J2) cables at the rear of the switch assembly.– Put circuit breaker at the front of switch assembly in the On (‘1’) position.– Check the Environmental (yellow) LED for an ON or FLASHING condition.Is the Environmental (yellow) LED ON or FLASHING?Yes No

021

Problem resolved– Go to Step 030 on page 1-307 to verify fix.

022

– Put circuit breaker at the front of the switch assembly in the Off (‘0’) position.– Return to Step 019 on page 1-304 to continue service with the next highest priority.

023



– Check for airflow blockage at air intakes and exhaust of the switch assembly and system frame. Also,check air temperature around the frame, looking for sources of abnormally high temperatures (above40°C or 104°F).

1-306 RS/6000 SP MAPs



024

Problem in switch supervisor card.– Have customer remove the switch from the active configuration and power off the switch

assembly.– If this is an HiPS or HiPS-LC8 switch, place the switch into service position. Refer to "Service

Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations andService Procedures.

– If this is an SPS or SPS-8 switch, turn off the circuit breaker. Unplug cables connected to J1 andJ2 at rear of the switch assembly. Then remove the front panel assembly from the inner chassis.

– If this is an HiPS 2.0, replace switch assembly.– If this is an HiPS 3.0, HiPS-LC8, SPS, or SPS-8, replace the switch supervisor card.– Perform "Node/Switch Supervisor Self-Test" in IBM RS/6000 SP: Maintenance Information,


025

– Go to Step 028.

026

Switch supervisor card is okay.– Check Environmental (yellow) LED for ON or FLASHING condition.Is Environmental (yellow) LED ON or FLASHING?Yes No

027

Problem resolved.– Go to Step 030 to verify fix.

028

– Check cable connections to switch supervisor card. If no obvious problems are found, call nextlevel of support.

029

– Have customer remove the switch from the active configuration and power off the switch assembly.– Remove blockage. Put the switch into service position, if required. Refer to "Service Position Proce-

dures" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures.– With all cables replugged and Environmental (yellow) LED OFF, power on the switch assembly.– Go to Step 030 to verify fix.

030

Component repaired or replaced.– If necessary, reinstall switch assembly cover.– Replace the switch from service position. Refer to "Service Position Procedures" in IBM RS/6000 SP:

Maintenance Information, Volume 3, Locations and Service Procedures.(Step 030 continues)



030 (continued)– If necessary, reconnect all cables at the rear of the switch assembly.– Put circuit breaker at the front of the switch assembly in the On (‘1’) position.– Go to Step 101 on page 1-350.

031


� “...P33Low...” � “...P33High...” � “...Pvolt33Range...” � “...PS1Fail...” � “...PS2Fail...” � “...PSFuseGood...”


– Switch off the circuit breaker. Unplug cables connected to J1 and J2 at rear of the switch assembly.Then remove the front panel assembly from the inner chassis.


Does condition state a P33 type problem?Yes No

032

Condition is PSxFail or PSxFuseGood.– Go to Step 042 on page 1-309.

033

Condition is P33Low, P33High, or voltP33Range.– Check cable conditions at switch supervisor card S00-SC-P5 and switch power card(s) S00-PC-P4 and

S00-PC-P6.Does the inner chassis cable appear to be okay?Yes No

034

Problem with inner chassis cable.– Go to Step 019 on page 1-304, Priority 4, to replace cable.

035

Condition is P33 type.Does condition state P33low or voltP33Range?Yes No

036

Condition is P33High.– Go to Step 053 on page 1-311

037


1-308 RS/6000 SP MAPs


037 (continued)– Disconnect connectors S00-PC-P4, S00-PC-P6 at the power card(s) and S00-PC-P5 at the supervisor

card. Remove the switch supervisor card. Refer to "Removing the Switch Supervisor Card (HiPS 3.0,HiPS-LC8, SPS, SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations andService Procedures.

– Using a digital multimeter, measure resistance at the planar connection for the supervisor card, betweenpins 12A and 12B. The resistance should be in a range of 4 to 20 ohms.

Is the measured resistance(s) in the acceptable range?Yes No

038

– Remove power supply card PS1.– Repeat measurement from Step 037 on page 1-308.Is the measured resistance(s) in the acceptable range?Yes No

039

– If this is the first time through this step, remove power supply card PS2 and go to Step 037on page 1-308 to repeat measurement.

– Otherwise, replace switch assembly. Refer to "Removing the Switch Assembly" in IBMRS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures.


040

– Replace power supply card. Refer to "Removing the Switch Power Card(s) (HiPS 3.0, HiPS-LC8,SPS, SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and ServiceProcedures.


041

– Replace supervisor card. Refer to "Removing the Switch Supervisor Card (HiPS 3.0, HiPS-LC8, SPS,SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures.


042

Problem with PSxFail or PSxFuseGood.Is this a PSxFail problem?Yes No

043

Problem with PSFuseGood.– Go to Step 053 on page 1-311

044




044 (continued)Is this a PS1Fail problem?Yes No

045

– Replace power supply card PS2. Refer to "Removing the Switch Power Card(s) (HiPS 3.0,HiPS-LC8, SPS, SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations andService Procedures.

– Reinstall the SPS front panel assembly, being careful to align the guide pins on the P1 to theinner chassis cup guide.

– Replug the power cable (J1) and supervisor cable (J2) to the rear of the assembly.– Put the circuit breaker in the on (‘1’) position.Does the PS2Fail condition still exist?Yes No

046


047

– Go to Step 050.

048

– Replace power supply card PS1. Refer to "Removing the Switch Power Card(s) (HiPS 3.0, HiPS-LC8,SPS, SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-dures.

– Reinstall the SPS front panel assembly, being careful to align the guide pins on the P1 to the innerchassis cup guide.

– Replug the power cable (J1) and supervisor cable (J2) to the rear of the assembly.– Put the circuit breaker in the on (‘1’) position.Does the PS1Fail condition still exist?Yes No

049


050

– Put the circuit breaker in the Off (‘0’) position?– Remove the power cable (J1) and supervisor cable (J2) from the rear of the switch assembly. Then

remove the front panel assembly.– Replace the supervisor card. Refer to "Removing the Switch Supervisor Card (HiPS 3.0, HiPS-LC8,

SPS, SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-dures.

– Reinstall the SPS front panel assembly, being careful to align the guide pins on the P1 to the innerchassis cup guide.

– Replug the power cable (J1) and supervisor cable (J2) to the rear of the assembly.– Put the circuit breaker in the On (‘1’) position?(Step 050 continues)

1-310 RS/6000 SP MAPs


050 (continued)Does the PSxFail condition still exist?Yes No

051


052

–

HiPS 2.0, HiPS 3.0, or HiPS-LC8 Replace switch assembly (see "Procedures for Switch Assem-blies" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures).

SPS or SPS-8 Replace inner chassis assembly (see "Procedures for SwitchAssemblies" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures).


053

– Remove power supply PS1. Refer to "Removing the Switch Power Card(s) (HiPS 3.0, HiPS-LC8, SPS,SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures.

– Reinstall the SPS front panel assembly, being careful to align the guide pins on the P1 connector to theinner chassis.

– Replug the power cable (J1) and supervisor cable (J2) at the rear of the assembly.– Put the circuit breaker in the On (‘1’) position.Does the failure condition still exist?Yes No

054

– Put the circuit breaker in the Off (‘0’) position.– Remove power cable (J1) and supervisor cable (J2) from the rear of the switch assembly. Then

remove the front panel assembly.– Replace power supply PS1. Refer to "Removing the Switch Power Card(s) (HiPS 3.0, HiPS-LC8,

SPS, SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and ServiceProcedures.

– Replace switch from the service position. Refer to "Service Position Procedures" in IBM RS/6000SP: Maintenance Information, Volume 3, Locations and Service Procedures.


055

– Put the circuit breaker in the Off (‘0’) position.– Remove power cable (J1) and supervisor cable (J2) from the rear of the switch assembly. Then remove

the front panel assembly.– Replug power supply PS1 and remove power supply PS2.– Reinstall the SPS front panel assembly, being careful to align the guide pins on the P1 connector to the

inner chassis.– Replug the power cable (J1) and supervisor cable (J2) at the rear of the assembly.– Put the circuit breaker in the On (‘1’) position.(Step 055 continues)



055 (continued)Does the failure condition still exist?Yes No

056

– Put the circuit breaker in the Off (‘0’) position.– Remove power cable (J1) and supervisor cable (J2) from the rear of the switch assembly. Then

remove the front panel assembly.– Replace power supply PS2. Refer to "Removing the Switch Power Card(s) (HiPS 3.0, HiPS-LC8,

SPS, SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and ServiceProcedures.

– Replace switch from the service position. Refer to "Service Position Procedures" in IBM RS/6000SP: Maintenance Information, Volume 3, Locations and Service Procedures.


057

– Put the circuit breaker in the Off (‘0’) position.– Remove power cable (J1) and supervisor cable (J2) from the rear of the switch assembly. Then remove

the front panel assembly.– Replug power supply PS2 and replace the switch supervisor card. Refer to "Removing the Switch

Supervisor Card (HiPS 3.0, HiPS-LC8, SPS, SPS-8)" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures.

– Reinstall the SPS front panel assembly, being careful to align the guide pins on the P1 connector to theinner chassis.

– Replug the power cable (J1) and supervisor cable (J2) at the rear of the assembly.– Put the circuit breaker in the On (‘1’) position.Does the failure condition still exist?Yes No

058


059

–

HiPS 2.0, HiPS 3.0, or HiPS-LC8 Replace switch assembly (see "Procedures for Switch Assemblies" inIBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures).

SPS or SPS-8 Replace inner chassis assembly (see "Procedures for Switch Assemblies" in IBMRS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures).


1-312 RS/6000 SP MAPs

MAP 0530: Switch Assembly Power

MAP 0530: Switch Assembly PowerNote: Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,

Locations and Service Procedures for placing or removing the high-performance switch in/fromservice position.

001

– From the system monitor on the control workstation or switch assembly, check the Power (green) LEDfor this switch assembly.

The definition of the Power (green) LED is as follows: Power (Green)

Off No 48 V dc power available at switch assembly.

Flashing Power available at switch assembly, but switch logic is Off.

On Power available at switch assembly, and logic is On.


002

Switch assembly getting 48 V dc power.Is Power (green) LED flashing?Yes No

003

Power (green) LED is On, indicating no problem with power supply.– Verify that you have the proper switch assembly, then restart “MAP 0510: Switch

Assembly” on page 1-294.– If this is the proper switch assembly, call the next level of support.

004

Switch assembly is getting power.– Power up switch logic from the virtual front panel on the control workstation.Does Power (green) LED light and stay lit?Yes No

005

Switch assembly not responding to the command.– Go to “MAP 0110: Supervisor Subsystem” on page 1-10.

006

Switch logic getting power.– Go to Step 101 on page 1-350.

007

– Check circuit breaker at front of switch assembly. Put this circuit breaker in the On (‘1’) position if it isnot already.




007 (continued)Does the circuit breaker go (trip) to the Off (‘0’) position?Yes No

008


009



– If this is an SPS or SPS-8, go to Step 036 on page 1-318 – If this is an HiPS or HiPS-LC8, check switch power harness (at power card P901 and circuit breaker)

inside switch assembly for any obvious problems which might cause a short.Does switch power harness appear okay?Yes No

010

– If this is an HiPS 2.0, replace the switch assembly.– If this is an HiPS 3.0 or HiPS-LC8, fix obvious problems; if necessary, replace the switch power

harness.– Replace the switch from service position. Refer to "Service Position Procedures" in IBM RS/6000

SP: Maintenance Information, Volume 3, Locations and Service Procedures.– Reconnect switch assembly cables.– Go to Step 007 on page 1-313.

011

– Replace the switch from service position. Refer to "Service Position Procedures" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations and Service Procedures.

– Using multimeter, check continuity between either tab of circuit breaker and a ground busbar (black wireattached) on the switch planar.

– Perform ‘Actions’ from table one-at-a-time until short disappears:

Order Action Replace

1 Unplug P102 from switch super-visor.

If this is an HiPS 2.0, replace switch assembly. If this is anHiPS 3.0 or HiPS-LC8, replace switch supervisor card. Referto "Removing the Switch Supervisor Card (HiPS 3.0,HiPS-LC8, SPS, SPS-8)" in IBM RS/6000 SP: MaintenanceInformation, Volume 3, Locations and Service Procedures.

2 Unplug P901 from power card. S00-PC-P901 cable.

3 All unplugged. If this is an HiPS 2.0, replace switch assembly. If this is anHiPS 3.0 or HiPS-LC8, replace switch power card.

– If “Action” removes short condition, replace the corresponding part in the “Replace” column.– Reconnect switch assembly cables.– Go to Step 007 on page 1-313.

012


1-314 RS/6000 SP MAPs


012 (continued)– From control workstation or switch assembly, check Power (green) LED for this node.Is Power (green) LED Off?Yes No

013

Switch assembly problem resolved.– Go to Step 101 on page 1-350.

014

– Check processor node(s) or switch assemblies on any other dc power harness for any that are poweredon. Ensure that the other processor node or switch assembly has its circuit breaker in the On (‘1’) posi-tion.

– Check the Power (green) LED for an On or Flashing condition.– Processor node(s) and switch assemblies receive 48-volt power from one of five power harnesses. The

sets are as follows:

PDU-BH-P1: Frame slots 1, 2, 3, 4PDU-BH-P2: Frame slots 5, 6, 7, 8PDU-BH-P3: Frame slots 9, 1ð, 11, 12PDU-BH-P4: Frame slots 13, 14, 15, 16

PDU-BH-P5: Frame slot 17

Is the Power (green) LED on other processor node(s) or switch assemblies On or Flashing?Yes No

015


016

– If there is only one switch assembly on the dc power harness, skip the next item and answer “Yes” tothe question below.

– Check all other switch assemblies on the same dc power harness as the failing switch assembly tocheck for the same symptom - circuit breaker on but Power (green) LED not lit.

Is this the only switch assembly showing this symptom?Yes No

017


018

– Check cable connections at PDU (see Step 014) and at switch assembly bulkhead (BH-J1) for goodconnections.

Are there good connections?Yes No

019

– Fix cable connection problem.– Go to Step 012.



020


Is this an HiPS 2.0 or HiPS 3.0 switch assembly?Yes No

021


022

– Go to Step 023

023

– Put the switch assembly into the service position. Refer to "Removing a Switch Assembly into theService Position" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Pro-cedures.

– Unplug 48 V dc harness from switch power card at S00-PC-P901.– Using a digital multimeter, check for continuity from switch tailgate S00-BH-J1 pin 5 to plug

S00-PC-P901 pin 2.Is there continuity?Yes No

024

– Check continuity between two tabs of switch assembly circuit breaker.Is there continuity?Yes No

025

– Replace switch assembly circuit breaker.– Replug S00-PC-P901.– Reinstall switch assembly in frame.– Go to Step 007 on page 1-313 to verify replacement.

026

Problem with switch power harness inside switch assembly.– Replace the switch power harness S00-PC-P901 inside this processor node.– Replace the switch from service position. Refer to "Service Position Procedures" in IBM RS/6000

SP: Maintenance Information, Volume 3, Locations and Service Procedures.– Go to Step 007 on page 1-313 to verify replacement.

027

– If this is an HiPS 2.0, replace switch assembly.– If this is an HiPS 3.0 or HiPS-LC8, replace the switch power card.– Replace the switch from service position (refer to "Service Position Procedures" in IBM RS/6000 SP:

Maintenance Information, Volume 3, Locations and Service Procedures), connecting only cables atS00-BH-J1 and S00-BH-J2.


1-316 RS/6000 SP MAPs


027 (continued)– Put circuit breaker at front of switch assembly in the On (‘1’) position.– Check Power (green) LED for an OFF condition.Is the Power (green) LED OFF?Yes No

028

– Go to Step 033.

029

Problem not resolved.Did you just replace the switch assembly or switch power card?Yes No

030

– Put switch assembly into the service position again. (Refer to "Removing a Switch Assembly intothe Service Position" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations andService Procedures.)

– Replace the switch supervisor card.– Replace the switch from service position (refer to "Service Position Procedures" in IBM RS/6000

SP: Maintenance Information, Volume 3, Locations and Service Procedures), connecting onlycables at S00-BH-J1 and S00-BH-J2.

– Put circuit breaker at front of switch assembly in the On (‘1’) position.– Check Power (green) LED for an OFF condition.Is the Power (green) LED OFF?Yes No

031

– Go to Step 033.

032

– Put switch assembly into the service position again. (Refer to "Removing a Switch Assembly intothe Service Position" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations andService Procedures.)

– Replace the switch supervisor control cable. Refer to Figure 1-33 on page 1-305.– Replace the switch from service position (refer to "Service Position Procedures" in IBM RS/6000

SP: Maintenance Information, Volume 3, Locations and Service Procedures), connecting onlycables at S00-BH-J1 and S00-BH-J2.

– Put circuit breaker at front of switch assembly in the On (‘1’) position.– Check Power (green) LED for an OFF condition.Is the Power (green) LED OFF?Yes No

033

Problem resolved.– Reconnect all cables at bulkhead of switch assembly.– Go to Step 101 on page 1-350.

034




034 (continued)Problem not resolved.– Go to Step 035.

035

Problem with the 48 V dc power distribution to this switch assembly.– Go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283.

036

This is an SPS or SPS-8 assembly.– Turn off the circuit breaker. Unplug cables connected to J1 and J2 at rear of the switch assembly. Then

remove the front panel assembly from the inner chassis.– Unplug inner chassis cable from the switch power card(s) S00-PC-P4, S00-PC-P6 and the switch super-

visor card S00-SP-P5.– Using a digital multimeter, check for inner chassis cable continuity from the switch tailgate and the con-

nectors in the following table:

– On the fan assembly, with CB in the On (‘1’) position, check for front chassis cable continuity betweenthe connectors in the following table:

Is there continuity?Yes No

037

Continuity check failed on a cable.Did the front chassis cable fail the continuity check?Yes No

038

Inner chassis cable failed test.– Replace inner chassis cable. Refer to "Removing the Switch Inner Chassis Cable (SPS,

SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and ServiceProcedures.


Table 1-9. Inner Chassis Cable Continuity

From To

S00-BH_J1 pin 5&9 P6 pin 2

S00-BH-J1 pin 5&9 P4 pin 2

S00-BH-J1 pin 1&6 P3 pin 16

P3 pin 17 p6 pin 1

P3 pin 17 p4 pin 1

Table 1-10. Front Chassis Cable Continuity

From To

P1 pin 17 P1 pin 16

1-318 RS/6000 SP MAPs


038 (continued)– Go to Step 007 on page 1-313 to verify replacement.

039

Front chassis cable failed test.– Ensure that the circuit breaker is in the On (‘1’) position. Then check for continuity between the

tabs of the circuit breaker.Is there continuity?Yes No

040

– Replace the circuit breaker.– Go to Step 007 on page 1-313 to verify replacement.

041

– Replace the front chassis cable. Refer to "Removing the Switch Front Chassis Cable (SPS,SPS-8)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-dures.

– Go to Step 007 on page 1-313 to verify replacement.

042

– If this is the first time through this step, replace the supervisor card. Refer to "Removing the SwitchSupervisor Card (HiPS 3.0, HiPS-LC8, SPS, SPS-8)" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures. Then go to Step 007 on page 1-313 to verify replace-ment.

– If this is the second time through this step, replace the switch inner chassis. Refer to "Procedures forSwitch Assemblies" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and ServiceProcedures. Then go to Step 007 on page 1-313 to verify replacement.

– Otherwise, go to “MAP 0480: Open in 48 V dc Distribution” on page 1-283



Primary Node

Secondary Node

Secondary Frame

Primary Frame

Switch Assm

HiPS 2.0

HiPS 3.0

Switch Assm

Secondary Node

Wrap Plug

Figure 1-35. Switch Connectivity Diagram

Label A in diagram: Switch clocks may be distributed through discrete clock cables or within theswitch data cables.

Label B in diagram: Clock interposer (P/N 93G1097) is used on HiPS 2.0 switch assembliesonly. See Figure 1-36.

Figure 1-36. HiPS 2.0 Interposer

Switch initialization sequence

1-320 RS/6000 SP MAPs


Label 0 in diagram: Single clock source must be selected for the entire switch network. Refer to"Selecting Appropriate Switch Clocks" in IBM RS/6000 SP: MaintenanceInformation, Volume 3, Locations and Service Procedures, for additionalinformation.

Label 1 in diagram: Primary node communicates with switch assembly in primary frame.

Label 2 in diagram: Connections to secondary nodes in primary frame are checked.

Label 3 in diagram: Any wrap plugs/terminators in primary frame are checked.

Label 4 in diagram: Switch assembly in primary frame communicates with switch assemblies insecondary frame(s) (if present).

Label 5 in diagram: Connections to secondary nodes in secondary frame are checked.


MAP 0540: Switch Function

MAP 0540: Switch FunctionNotes:

1. Refer to “Appendix A” in RS/6000 SP: Maintenance Information, Volume 1 for frame-to-frame orswitch-to-switch cables. Logical frame to physical frame translation information can also be found inthis appendix.

2. Refer to "HiPS 2.0/3.0 Node Data Cables" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for switch connections to primary and secondary processor nodes.

3. For the LC8, refer to "HiPS-LC8 Node Data Cables" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures.

4. Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for placing or removing the high-performance switch in/from serviceposition.

001

Possible functional problem with switch assembly.

Note: If out.top does not match the physical switch configuration, run Eannotator . (Refer to the Installa-tion section of IBM RS/6000 SP: Scalable POWERparallel Switch Support for the IBM PSSP forAIX (GC23-3998).

– To complete the following procedures, you will need to have primary node root access. (Customer mayenter root password when required.)

– If either of the following two conditions is true:

� Estart has not been run by the customer

� The CE has already replaced components that might affect the switch.

then from the control workstation of the “primary” processor node, enter:

Estart

You should receive a message indicating successful initialization at the primary node. If you receive anyother message, consult the “Diagnosing High Performance Switch Problems” section of IBM ParallelSystem Support Programs for AIX: Diagnosis Guide

– Determine the primary node number. From an AIX window on the control workstation, enter:

Eprimary

– Determine the host name for this node by checking “reliable_hostname” for the node number with thecommand:

splstdata -n | pg

– From the system file server, log into “primary” processor node as root using the telnet command:

telnet PrimaryNodename

– Check errpt -a -N Worm | pg for any switch related problems. If any errors are listed, use the errorinformation, with this MAP, to help isolate the problem.

– Check the functional state of the switch in the out.top file by issuing the following command on the“primary” processor node:

pg /var/adm/SPlogs/css/out.top

Notes:

1. Verify that the timestamp on the out.top file is current (using ls -l /var/adm/SPlogs/css/out.top ).(Step 001 continues)

1-322 RS/6000 SP MAPs


001 (continued)

2. Reference “MAP 0100: Start of Service Call” on page 1-4 for information on using the pgcommand.

– Problems are indicated at the end of a text line by the following sequence:

–# ErrorMessage

Examples of error messages:

-1 uninitialized-3 R: faulty link from VOP

Does /var/adm/SPlogs/css/out.top file report any problems?Yes No

002

No functional problems found.Have you replaced component(s) or fixed problem(s)?Yes No

003

Did Estart command start okay?Yes No

004

– Consult the “Diagnosing High Performance Switch Problems” section of IBM RS/6000SP: Diagnosis and Messages Guide.

– Go back to Step 001 on page 1-322

005


006

All switch problems resolved.– Go to “MAP 0570: End of Call” on page 1-357.

007

– Use the appropriate table of error conditions to continue service:

HiPS Error Conditions Table 1-11 on page 1-324

SPS Error Conditions Table 1-12 on page 1-327



Table 1-11 (Page 1 of 3). HiPS Error Conditions

Error # Message/Condition Description and Action

−1(HiPS)

Uninitialized Description: Switch adapter has not been initialized.Processor node may not recognize adapter due to hardwarefailure or bad software configuration.

Action:

1. If there are any other errors in the/var/adm/SPlogs/css/out.top file, address those errorsfirst.

Note: If the problem is on all nodes in the frame, checkfor any hardware problems with the switchassembly. Also check for switch-to-switch prob-lems on all jacks of the switch assembly.

2. If all the nodes are uninitialized except for the primarynode, verify that the primary node is connected to thecorrect port.

3. Have customer verify that the correct switch software isinstalled and running on this node. rc.switch starts thefault_service_Worm_RTG daemon and the fs_monitordaemon.

4. Log into processor node and enter:

lscfg | grep css

5. If you get no result , try swapping in another switchadapter. Repeat step 3. If you get a result, the problem isprobably resolved; repeat Step 001 on page 1-322 fornext problem or go to Step 101 on page 1-350 to verifyfix.


−2(HiPS)

Faulty link connected to inputport, or device is powered off orhas no clock.

Description: Outward link to input port has failure.

Action: Go to Step 008 on page 1-329.

−3(HiPS)

Faulty link from output port Description: Return link from output port has failure.


−4(HiPS)

Faulty link connected to bothoutput and input ports

Description: Both outward and return links of the ports havefailures.


−5(HiPS)

Token timing test failed (probableswitch element miswire)

Description: Initialization of this link failed.

Action:

1. Check this connection against the actual hardwarecabling.

2. If this connection does match , go to Step 008 onpage 1-329.

3. Have the customer update the switch topology file or thehardware as appropriate.

4. Repeat Step 001 on page 1-322 for next problem or go toStep 101 on page 1-350 to verify fix.

−6(HiPS)

Unexpected results from MSMUV dc scan service message

Description: Probable hardware problem.

Action: Continue with Step 008 on page 1-329.

1-324 RS/6000 SP MAPs




−7(HiPS)

Service phase worm dialogtime-out

Description: Switch cannot contact fault_service daemon onprocessor node. Processor node may be hung or fault_servicedaemon not active.

Action:

1. Have customer verify that the processor node is activeand that the correct switch software (fault_servicedaemon) is active on this node. Example: Log intoprocessor node and enter:

ps -ef | grep fault

2. If you get no result , the fault_service daemon is notactive. Contact next level of support, if necessary.

−8(HiPS)

frame.slot mismatch (possiblemiswire)

Description: Initialization of this link detected a different switchnode number than the one expected.

Action:


2. If the cabling does not match , correct the cablingproblem, then go to step 5.

3. Check the processor node's hostname and switch nodenumber against the configuration using the command:

splstdata -s | pg

4. If this occurs on all nodes of a frame, check for a logical-to-physical frame number mismatch.

5. Have the customer update the configuration, or you cancorrect the cabling, as appropriate.


−9(HiPS)

Software scan of switch elementfailed

Description: Probable hardware problem.


−10through−15(HiPS)

Switch ... RAM failed diagnostics Description: Probable hardware problem.


−16(HiPS)

Device may not be driven by theglobal oscillator (may be drivenby internal clock)

Description: Initialization of this link failed due to possibleclock synchronization problem.






−17(HiPS)

Node adapter has been replacedby wrap plug or cable

Description: Initialization detected a wrapped port where aprocessor node was expected. This may result from isolationprocedures.

Action:

1. If this is an unexpected condition , check cabling toprocessor node against the configuration file/etc/SP/expected.top .

2. If the processor node can be reconnected , remove thewrap plug and connect the data cable between the switchassembly and the processor node.

3. If the processor node is to permanently removed ,have the customer update the configuration file/etc/SP/expected.top .


−18(HiPS)

Link between devices is replacedby wrap plug or cable

Description: Initialization detected a wrap plug or cable ratherthan the expected cabling.

Action: Same as for Error −17.

−19(HiPS)

Dialog time-out during route tabledistribution

Description: Problem occurred during initialization which inter-fered with distribution route table to all processor nodes.

Action: Same as for Error −7.

−20(HiPS)

This link may have been wiredimproperly (see/var/adm/SPlogs/css/cable_miswire file

Description: Switch network not wired as specified in theswitch topology.

Action:

1. If this is code level 1.00 - 1.01, check for cabling prob-lems. Go to step 4.

2. Check for cable errors from the primary processor nodeusing the following command:

pg /var/adm/SPlogs/css/cable_miswire

3. Check cables in order until a miswire is found, correctingany problems.


1-326 RS/6000 SP MAPs


Table 1-12 (Page 1 of 3). SPS Error Conditions


2(SPS)

Initialized Description: Initialization detected a wrapped port where aprocessor node or dependent node was expected (this mayresult from isolation procedures), or else a disconnectedcable.

Action:

1. If this is an unexpected condition , check cablingagainst the configuration filevar/adm/SPlogs/css/out.top .

2. If the processor node or dependent node can bereconnected , remove the wrap plug and connect thedata cable between the switch assembly and theprocessor node or dependent node.

3. If the processor node or dependent node is to be per-manently removed , have the customer update the switchtopology.

4. Repeat Step 001 on page 1-322 for next problem or goto Step 101 on page 1-350 to verify fix.

1(SPS)

Link status: Operational Description: Link status is operational.

Action: Same actions as listed in Error # 2.

0(SPS)

Uninitialized Description: Switch adapter has not been initialized.Processor node may not recognize adapter due to hardwarefailure or bad software configuration.

Action:

1. If there are any other errors in the/var/adm/SPlogs/css/out.top file, address those errorsfirst.

Note: If the problem is on all nodes in the frame, checkfor any hardware problems with the switchassembly. Also check for switch-to-switch prob-lems on all jacks of the switch assembly.

2. If all the nodes are uninitialized except for the primarynode, verify that the primary node is connected to thecorrect port.

3. Have customer verify that the correct switch software isinstalled and running on this node. rc.switch orcss_restart_node starts thefault_service_Worm_RTG_SP daemon and thefs_monitor daemon.

4. Log into processor node and enter:

lscfg | grep css

5. If you get no result , try swapping in another switchadapter. Repeat step 3. If you get a result, the problemis probably resolved; repeat Step 001 on page 1-322 fornext problem or go to Step 101 on page 1-350 to verifyfix.

6. The problem is probably the switch assembly. Go to Step008 on page 1-329.





−1(SPS)

Device status: Device notresponding

Link status: Link as beenremoved from network, otherstage faulty

Description: Possible hardware problem.


−2(SPS)

Link status: Wrap plug is installed Description: Initialization detected a wrap plug or cable ratherthan the expected cabling.

Action: Same as for Error 2.

−3(SPS)

Device status: Device has beenremoved from network becauseof a bad signature

Link status: Not operational



−4(SPS)

Device status: Device has beenremoved from network, faulty

Link status: Link has beenremoved from network or mis-wired, faulty

Description: Switch network not wired as specified in switchtopology or problem with connection between switch anddevice.

Note: You may get this error number for a jack which couldconnect to a node, but instead has a wrap plug. Inthis case, this message is a warning only and can beignored.

Action:


2. If the cabling does not match , correct the cablingproblem, then go to step 5 below.

3. Check the processor node's hostname and switch nodenumber against the configuration using the command:

splstdata -s | pgSDRGetObjects DependentNode


5. If there is a mismatch, have the customer update the con-figuration, or you can correct the cabling, as appropriate.


−5(SPS)

Send packet from local nodefailed



−6(SPS)

Device status: Device has beenremoved from network, noAUTOJOIN

Link status: Link has beenremoved from network, noAUTOJOIN

Description: AUTOJOIN was not selected for node duringremoval.

Action:

1. If there is an obvious problem, like node powered off ordisconnected, fix that problem first. Then issue Eunfencefor this processor node or dependent node.

2. If problem was resolved, repeat Step 001 on page 1-322for next problem or go to Step 101 on page 1-350 toverify fix.

3. If problem was not resolved, go to Step 008 onpage 1-329.

1-328 RS/6000 SP MAPs




−7(SPS)

Device status: Device has beenremoved from network for notresponding

Link status: Link has beenremoved from network, fenced



−8(SPS)

Device status: Device has beenremoved from network becauseof a miswire

Link status: Link has beenremoved from network, probablemiswire

Description: Initialization of this link detected a different switchnode number than the one expected.

Action:


2. If the cabling does not match , correct the cablingproblem, then go to step 5.

3. Check the node's hostname (or IP address) and switchnode number against the configuration using thecommand:

splstdata -s | pg (standard node)

SDRGetObjects DependentAdapter (dependent node)


5. Have the customer update the configuration, or you cancorrect the cabling, as appropriate.

6. Repeat Step 001 on page 1-322 for next problem or goto Step 101 on page 1-350 to verify fix.

−9(SPS)

Device status: Destination notreachable

Link status: Link has beenremoved from network, not con-nected



008

Functional problems reported in /var/adm/SPlogs/css/out.top file. This file lists all switch data con-nections with comment lines indicating the various types.– Check the entire /var/adm/SPlogs/css/out.top file for errors before proceeding to the prioritized table.– Use the following prioritized table to service problems reported in the /var/adm/SPlogs/css/out.top file.

The messages are from comment lines preceding the error.

Notes:

1. Be aware that wrap plugs or terminators used in the following steps can potentially fail; therefore,exercise caution before performing major replacements to make sure that a diagnostic wrap plug orterminator is not faulty.

2. Where applicable, frame and switch assembly jack numbers are indicated on each line of theout.top file. (Refer to "Format Structure" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for more information on the nomenclature.)

For example:

L01-S00-BH-J18 identifies Logical frame 1, S00-BH-J18

E02-S00-BH-J18 identifies Physical frame 2, S00-BH-J18



L03-N01 identifies Logical frame 3, Node 1

E02-N04 identifies Physical frame 2, Node 4

S01-S02-BH-J3 identifies Multi-switch frame 1, slot 2, BH-J3

Refer to notes at beginning of “MAP 0540: Switch Function” on page 1-322 for more information oncable connections and logical-to-physical frame translations.

3. Be aware that for logical frames consisting of two physical frames, all out.top even-numberednodes represent nodes physically located in the expansion frame (F/C 1010) but at the next lowerslot number. For example, L01-N04 (logical frame 1, node 4) could be physically located at E02-N03(physical frame 2, slot 3).

Priority Message/Condition Action

1 � “On board connections...” Go to Step 093 on page 1-349 to replace the switchassembly.

2 � “Primary node connection...”� “Node connections...” on same

switch as primary node

� If this is a standard node, go to Step 009 tocheck “primary” or “secondary” processor nodeconnection.

� If this is a dependent node (connection to router),go to “MAP 0550: Dependent Node” onpage 1-351.

3 � “Wrapped ports”� “frame # to frame #”� “switch # to switch #”

� “Switch connections...”

Go to Step 042 on page 1-340 to check the wrappedport or external switch connection.

4 � “Node connections...” not on sameswitch as primary node.

� If this is a standard node, go to Step 009 tocheck “secondary” processor node connection.

� If this is a dependent node (connection to router),go to “MAP 0550: Dependent Node” onpage 1-351.

5 � All problems in/var/adm/SPlogs/css/out.top filehave been addressed.


009

The /var/adm/SPlogs/css/out.top file indicates a problem with a “Primary node” or “Secondary node”connection.– Open frame rear cover and check the cable connection from the indicated switch assembly jack to the

processor node.Is there a cable connected to the indicated jack on the switch assembly?Yes No

010

No cable connected at the indicated jack. Refer to the table in "HiPS 2.0/3.0 Node Data Cables" inIBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures, asrequired.(Step 010 continues)

1-330 RS/6000 SP MAPs


010 (continued)Should there be a cable connecting the indicated jack to a processor node?Yes No

011

– Make sure a wrap plug is properly installed on the connector. Refer to Figure 1-31 onpage 1-299 and Figure 1-32 on page 1-300 for views of the switch wrap plugs.

– Have customer check (and update if necessary) the switch configuration file appropriatelybefore continuing:

� For code levels 1.00 - 1.01, modify the /etc/SP/expected.top on the primary node.

� For code level 1.02 and higher, use the Etopology command.

Did you just correct a problem with a wrap plug or correct the switch configuration?Yes No

012

– Go to Step 093 on page 1-349 to service or replace the switch assembly.

013


014

– Connect a switch data cable from this jack to the proper processor node.– Go to Step 101 on page 1-350.

015

– Check cable connection at switch assembly and processor node.Does the cable appear to be fully connected at the switch assembly and the processor node?Yes No

016


017

– From the front of the RS/6000 SP frame or from the control workstation, check the Power (green) LEDon the processor node to make sure it is lit.

Is the Power (green) LED lit, indicating the processor node is powered on?Yes No

018

Processor must be powered on for the switch to recognize the port.– Power on this processor node, and check the Power (green) LED.(Step 018 continues)



018 (continued)Does the Power (green) LED stay lit, indicating the processor node is powered on?Yes No

019

Processor node has a power problem.– Go to “MAP 0130: Processor Node” on page 1-30 to fix problem.

020


021

Processor node is powered on.– Run advanced diagnostics in service mode on device “css0” on this processor node. Refer to "Running

Diagnostics in a Processor Node" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locationsand Service Procedures, as required.

–

Notes:

1. Advanced cable wrap tests will not run successfully for 15- and 20-meter SPS data cables. If 15- or20-meter data cables are used, swap/change the suspected cable.

2. Advanced “css0” diagnostics will require a male and a female wrap plug to perform the card wrapand cable wrap tests. When testing the SPS adapter, cable p/n 46H9699 will also be required toperform card diagnostics. This cable is part of the SPS feature bill of materials.

3. If unable to run diagnostics, reseat or replace the card.

Do you get a Service Request Number (SRN) from “css0” diagnostics?Yes No

022

No problem detected by diagnostics; problem is in switch assembly.– Go to Step 093 on page 1-349.

023

An SRN was obtained from diagnostics.– Use the following SRN table to continue service:

Table 1-13 (Page 1 of 6). Service Request Number (SRN) Table for Switch Adapters

Service RequestNumber

SRNSource Failing Component(s) Description

762-100through762-199

D SPS adaptersoftwaresystem or I/O planar

Problem detected with deviceor device data corrupted. Youmay need to reinstall “ssp.css”code.

762-200through762-299

D external clockSPS adapter(wrap plug)

Problem detected with externalclock.

1-332 RS/6000 SP MAPs





762-2A0through762-2A9

D SPS adapter Problem detected with internalclock.

762-300through762-399

D SPS adaptersystem or I/O planar

Problem detected with POSregisters.

762-400through762-499

D SPS adaptersoftware

TBIC test failed.

762-500through762-599

D SPS adapter SRAM test failed.

762-600through762-699

D SPS adapter Microprocessor test failed.

762-700through762-799

D SPS adapter Interrupt test failed.

762-800through762-899

D SPS adapter FIFO test failed.

762-900through762-999

D SPS adapterI/O planardata cable

DMA engine test failed.

762-Ax3(See note)

D SPS adapter(terminator)

Card wrap test failed.

762-Ax4(See note)

D SPS data cable(wrap plug)

Cable wrap test failed.

763-1xx(See note)

D SPS MX adaptersoftwaresystem or I/O planar

Problem detected with adevice or device data cor-rupted.

Note: You may need toreinstall ssp.css soft-ware.

763-200through763-299(except 763-282)

D ext clockSPS MX adapterwrap plug

Problem detected with theexternal clock (SP switch).

763-282 D switch cable Adapter is good but switchcable is not attached.


D SPS MX adapter Problem detected with theinternal clock.

763-3xx(See note)

D SPS MX adaptersystem or I/O planar







763-4xx(See note)

D SPS MX adaptersoftware

TBIC test failed.

763-5xx(See note)

D SPS MX adapter SRAM test failed.

763-6xx(See note)

D SPS MX adapter Microprocessor test failed.

763-7xx(See note)

D SPS MX adapter Interrupt test failed.

763-8xx(See note)

D SPS MX adapter FIFO test failed.

763-9xx(See note)

D SPS MX adapterswitch cablesystem or I/O planar


763-Ax3(See note)

D SPS MX adapter(terminator)


763-Ax4(See note)

D switch cable(wrap plug)


763-xx2(See note)

D SPS MX adapter Bad adapter (except SRN763-282).

763-xx3 D SPS MX Adapter Bad adapter.

763-xx4 D SPS MX AdapterSwitch Cable

Bad switch cable.

764-1xx(See note)

D SP System Attachment Adaptersoftwaresystem or I/O planar

Problem detected with adevice or device data cor-rupted.

Note: You may need toreinstall ssp.css soft-ware.

764-200through764-299(except 764-282)

D ext clockSP System Attachment Adapterwrap plug

Problem detected with theexternal clock (SP switch).

764-282 D switch cable Adapter is good but switchcable is not attached.


D SP System Attachment Adapter Problem detected with theinternal clock.

764-3xx(See note)

D SP System Attachment Adaptersystem or I/O planar


764-4xx(See note)

D SP System Attachment Adaptersoftware

TBIC test failed.

764-5xx(See note)

D SP System Attachment Adapter SRAM test failed.

1-334 RS/6000 SP MAPs





764-6xx(See note)

D SP System Attachment Adapter Microprocessor test failed.

764-7xx(See note)

D SP System Attachment Adapter Interrupt test failed.

764-8xx(See note)

D SP System Attachment Adapter FIFO test failed.

764-9xx(See note)

D SP System Attachment Adapterswitch cablesystem or I/O planar


764-Ax3(See note)

D SP System Attachment Adapter(terminator)


764-Ax4(See note)

D switch cable(wrap plug)


764-xx2(See note)

D SP System Attachment Adapter Bad adapter (except SRN764-282).

764-xx3 D SP System Attachment Adapter Bad adapter.

764-xx4 D SP System Attachment AdapterSwitch Cable

Bad switch cable.

80x-762 D SoftwareSPS Adapter

Error occurred while runningthe diagnostics.

80x-83C D SoftwareHiPS Adapter-2


80x-890 D SoftwareHiPS Adapter-1


83C-100through83C-199

D HiPS Adapter-2SoftwareSystem or I/O planar

Problem detected with deviceor device data corrupted. Youmay need to reinstall “ssp.css”code.


D External clockHiPS Adapter-2(Wrap Plug)

Problem detected with externalclock.


D HiPS Adapter-2System or I/O Planar



D HiPS Adapter-2 MSMU read/write test failed.


D HiPS Adapter-2Software

MSMU test failed.


D HiPS Adapter-2Software

MSMU returned garbage data.







D HiPS Adapter-2 DRAM test failed.


D HiPS Adapter-2 Microprocessor test failed.


D HiPS Adapter-2 Interrupt test failed.


D HiPS Adapter-2 FIFO test failed.


D HiPS Adapter-2I/O planar


83C-Ax3(See note)

D HiPS Adapter-2(Terminator)


83C-Ax4(See note)

D Data cable(Wrap plug)


980-101 D HiPS Adapter-1SoftwareSystem or I/O planar

Device driver open error.

980-102 D HiPS Adapter-1SoftwareSystem or I/O planar

Device configuration error.

980-201through980-203

D HiPS Adapter-1System or I/O planar

POS read/write test failed.

980-210 D HiPS Adapter-1External clock

Card wrap network initializa-tion failure.

980-211 through 980-213

D HiPS Adapter-1(Terminator)


980-214980-215

D HiPS Adapter-1Data cable(Wrap plug)

Cable wrap test failed w/orunning card wrap test.

980-216980-217

D Data cable(Wrap plug)

Cable wrap test failed only(card wrap test passed).

980-220980-221

D HiPS Adapter-1 Adapter hardware read/writetest failed.

980-222 D HiPS Adapter-1External clock

Adapter hardware data readerror.

980-223 D HiPS Adapter-1 Adapter FIFO read/write testfailed.

980-224 D External clockHiPS Adapter-1

Adapter hardware read/writetest failed on external clock.

1-336 RS/6000 SP MAPs





980-225 D HiPS Adapter-1 Adapter hardware read/writetest failed on internal clock.

980-226 D External clockHiPS Adapter-1(Wrap plug)

Cable wrap network initializa-tion failure.

Note:

An ‘x’ in an SRN indicates a “don't care” digit.

– Go to Step 024.

024

An SRN was obtained and Table 1-13 on page 1-332 was used to determine the list of possible failingcomponents.– From the list of possible failing components, use the following prioritized table to perform service.

Priority Failing Component Action

1 Software 1. Have customer verify that the software is configuredand operating correctly for this processornode/system.

2. If no problem is found, continue with next highestpriority item in the list for this SRN.

3. Otherwise, power off this processor node and con-tinue service at Step 034 on page 1-339.

2 External clock 1. Check to see if a switch clock cable is connected atswitch adapter of this processor node.

2. If clock cable exists, reseat switch clock cable; oth-erwise reseat switch data cable.

3. Run advanced diagnostics on the device “css0”.4. If diagnostics fail with the previous SRN, check at

least one other processor node for indication of aclock problem. If necessary, run advanced diagnos-tics on this other node, using the device “css0”.

5. If more than one node has a clock problem, go toStep 025 on page 1-338.

6. Replace the switch clock cable or switch data cablethat was just reseated in step 2 above.

7. Continue service at Step 035 on page 1-339.

3 Data cable 1. Reseat switch data cable at switch adapter of thisprocessor node.

2. Run advanced diagnostics on the device “css0”.3. If diagnostics fail with the previous SRN, replace

switch data cable.4. Continue service at Step 035 on page 1-339.



Priority Failing Component Action

4 HiPS Adapter-1HiPS Adapter-2SPS AdapterSP System AttachmentAdapter

1. Replace the switch adapter card on this processornode.

2. Reconnect all cables to the processor node.3. Continue service at Step 035 on page 1-339.


6 System or I/O planar 1. Run advanced diagnostics on the “Base System” orI/O planar. If a problem is detected, use SRN toservice.

2. Replace the system or I/O planar on this processornode. Make sure to reinstall all parts and cables.

3. Reconnect all cables to the processor node.4. Continue service at Step 035 on page 1-339.

7 Wrap plug orTerminator

Check the wrap plug or terminator again to make surethat it is not at fault.

8 All components replaced. Call next level of support.

025

Test indicates a clock problem.– Check the switch clock selections on the “problem” switch(es). Reference "Selecting Appropriate Switch

Clocks" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures formore information.

Do the clock settings on the “problem” switch assemblies appear to be okay?Yes No

026

– Change the clock selections on the appropriate switch(es). Reference "Selecting AppropriateSwitch Clocks" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and ServiceProcedures for more information.


027

Is an external clock selected?Yes No

028

Defective master clock card.Is this the only switch in this system?Yes No

029

– Have the customer select an alternate clock (via the Eclock command.– Issue the Estart command.(Step 029 continues)

1-338 RS/6000 SP MAPs


029 (continued)Does the switch run?Yes No

030

– Continue service at Step 035.

031

– Go to Step 032.

032

– For HiPS 3.0, replace the switch clock card. Refer to "Removing the Switch Clock Card (HiPS3.0)" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures.

– For HiPS 3.0, HiPS 2.0, SPS, or SPS-8, replace the switch assembly. Refer to "Procedures forSwitch Assemblies" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations andService Procedures.


033


034

– From the node front panel on the control workstation, put the mode in the SERVICE position.– Power-on this processor node.– Go to Step 035.

035

– Run advanced diagnostics in service mode on the device “css0”.Do you get an SRN from diagnostics?Yes No

036

No problem detected by diagnostics.Have you just reseated, repaired, or replaced a component?Yes No

037

Problem must be switch assembly.– Go to Step 093 on page 1-349 to service or replace switch assembly.

038


039




039 (continued)Problem detected by diagnostics.Is this SRN the same as the previous SRN?Yes No

040

– Go to Step 023 on page 1-332 to service the new SRN.

041

– Go to Step 024 on page 1-337 to perform service on the next highest priority component in the list forthis SRN.

042

The /var/adm/SPlogs/css/out.top file indicated a problem with a switch-to-switch connection or wrappedport.– Check the specified jack(s) at rear of switch assemblies for an obvious problem such as a loose con-

nection. Pay special attention to cables that may have been moved recently.Do connection(s) appear to be okay?Yes No

043

– Fix the obvious connection problem.– Go to Step 101 on page 1-350 to verify the fix.

044

– If this is a multi-frame system , check the indicated jacks against the wiring charts for multi-frameswitch systems.

Note: Be aware that in large systems, connections for switch assemblies not in the multi-switch frameare usually scattered throughout the out.top file.

Is this a multi-frame system with problems reported on all switch data cables from one or moreswitches?Yes No

045

– Depending on whether the problem is a wrapped port or a switch-to-switch connection, performone of the following steps:

� wrapped port (wrap plug installed): Remove the existing wrap plug. Install a different wrapplug on the jack(s) indicated.

� switch-to-switch connection: Disconnect the switch data cable from both ports indicated.Install wrap plugs on the jacks indicated.

Note: When unplugging the two ends of the suspect cable, check/var/adm/SPlogs/css/out.top to verify only two (2) ports were lost. If four (4) portswere lost, then two cables were swapped across that switch to switch connection.Connect the cables correctly and check /var/adm/SPlogs/css/out.top for any othererrors.


1-340 RS/6000 SP MAPs


045 (continued)– If this is a switch-to-switch connection, have customer update the switch configuration file appro-

priately (to show wrap plugs) before continuing:

� For code levels 1.00 - 1.01, modify the /etc/SP/expected.top on the primary node.

� For code level 1.02 and higher, use the Etopology command.

– Make sure processor node(s) that were put in “Service” mode are returned to “Normal” mode.Make sure all processor node(s) are IPLed completely.

– Have customer verify that the switch code is running on all processor nodes.– From the control workstation of the “primary” processor node, type Estart followed by ENTER.– Check /var/adm/SPlogs/css/out.top file for problems regarding the jack(s) indicated.Does out.top file show a problem on any jack(s) indicated?Yes No

046

– If this is a switch-to-switch connection, remove both wrap plugs from the switch assem-blies. Replace the frame-to-frame switch data cable that was disconnected before.

– Go to Step 101 on page 1-350 to verify the fix.

047

Problem is in the switch assembly which is still reporting a problem.– Go to Step 093 on page 1-349 to service or replace the switch assembly.

048

Possible problem caused by clocking or grounding between frames.– Continue with Step 049

049

Problem reported with all switch data cables from one or more frames. This may be caused by a clockingor grounding problem between frames.

Note: The “master-clock” switch indicates the switch which is supplying the master clock for thesystem—the master clock will have the clock input multiplexor set to “internal clock” (0). A“problem” switch indicates any switch which is experiencing problems.

– Check the switch clock selections on the “problem” switch(es). Reference "Selecting Appropriate SwitchClocks" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures formore information.

Do the clock settings on the “problem” switch assemblies appear to be okay?Yes No

050

– Change the clock selections on the appropriate switch(es). Reference "Selecting AppropriateSwitch Clocks" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and ServiceProcedures for more information.


051




051 (continued)Is the problem switch in a frame with processor nodes?Yes No

052

Problem switch is in a multi-switch frame.– From the system monitor on the control workstation, open the “Switch Front Panel” window for

this switch.– Check the clock selection to see if it is set to “Internal” or to one of the following:

� HiPS: “External 1”, “External 2”, or “External 3”

� SPS: “Jack3”, “Jack4”, or “Jack5”.

Is the clock selection set to one of the External clocks?Yes No

053

This switch is providing the master clock for the system.– Have customer use the Eclock command to select a different master clock for the system.– Go to Step 101 on page 1-350 to verify fix.

054

– Select a different external clock for this switch assembly.– From the control workstation of the primary node, enter:

Estart

to reinitialize the switch.– Check /var/adm/SPlogs/css/out.top file to see if problems are still reported on all data cables

connected to this switch assembly.Have some of the problems reported on data cables connected to this switch assembly beenresolved?Yes No

055

Probable problem with switch clock card or switch planar in this switch assembly.– Replace the clock card in this switch assembly. Make sure to reconnect all cables con-

nected to the clock card.– Reconnect cables S00-BH-J1, S00-BH-J2, S00-BH-J3, S00-BH-J5, and S00-BH-J7 at

tailgate of this switch assembly.– Set the switch clock selection on this switch assembly to the original (correct) setting.– From the control workstation of the primary node, enter:

Estart

to reinitialize the switch.– Check /var/adm/SPlogs/css/out.top file to see if problems are still reported on all data

cables connected to this switch assembly.(Step 055 continues)

1-342 RS/6000 SP MAPs


055 (continued)Are there still problems reported on all data cables connected to this switch assembly?Yes No

056

Clock problem resolved for this switch assembly.– Go to Step 100 on page 1-350

057

Problem with switch planar.– Go to Step 094 on page 1-349 to replace switch assembly.

058

– Go to Step 060.

059


060

Probable problem with original external clock source.– Based on the original external clock selection, locate the frame which was sourcing the switch clock.

Locate a “test” processor node in this frame which can be used for service.– Disconnect the switch data cable for this processor node at the tailgate of the switch assembly.– Using switch cabling list, locate the switch data cable (S00-BH-J3, S00-BH-J5, S00-BH-J7, or

S00-BH-J9) at the processor node frame that sources the clock to the failing switch assembly. Discon-nect this cable at the tailgate of the processor node frame, then connect the end of the processor nodedata cable to the jack.

– Run advanced diagnostics on “css0” on the “test” processor node. Do not perform cable wrap test. Ref-erence "Running Diagnostics in a Processor Node" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures, as required.

– Look for an SRN indicating a clock problem (such as “External clock”) is one of the failing components.Do the “css0” diagnostics fail with an indication of a clock problem?Yes No

061

Problem is either cable or reported switch assembly.– Replace switch data cable that originally supplied the switch clock to the failing switch assembly.– Set the switch clock selection on this switch assembly to the original (correct) setting.– From the control workstation of the primary node, enter:

Estart

to reinitialize the switch.– Check the /var/adm/SPlogs/css/out.top file to see if problems are still reported on all data

cables connected to this switch assembly.(Step 061 continues)



061 (continued)Are there still problems reported on all data cables connected to this switch assembly?Yes No

062

Clock problem resolved for this switch assembly.– Go to Step 100 on page 1-350

063

Clock problem isolated to reported switch assembly.– Go to Step 055 on page 1-342

064

Problem with switch clock source switch assembly.– Replace clock card in the clock source switch assembly. Make sure to reconnect all cables connected to

the clock card.– Set the switch clock selection on this switch assembly to the original (correct) setting.– Go to Step 055 on page 1-342 to service the clock source switch assembly.

065

– Check the ground strap(s) connected to the “problem” frame(s). Ground strap(s) are connected at boltsnear the cable escapes inside the bottom rear of each frame. Refer to “RS/6000 SP InstallationInstructions”, in IBM RS/6000 SP: Maintenance Information Volume 1, Installation and Relocation, for aview of a ground strap connection.

Do all ground strap(s) connecting the frames make adequate contact at both ends?Yes No

066

– Fix or replace ground strap between the frames.– Go to Step 101 on page 1-350 to verify fix.

067

– Determine whether this is an HiPS 2.0 or HiPS 3.0 switch assembly. An HiPS 3.0 switch assembly hasno connectors at HPS-BH-J35 and HPS-BH-J36.

Is this an HiPS 3.0 switch assembly?Yes No

068

This is an HiPS 2.0 switch assembly; therefore, we need to check data cable interposer con-nections. External clock sources 1, 2, and 3 correspond to top (S00-BH-J361), middle(S00-BH-362), and bottom (S00-BH-J363) connections at S00-BH-J36, respectively.– Either visually or by referencing Appendix A in IBM RS/6000 SP: Maintenance Information

Volume 1, determine which bulkhead jack, S00-BH-J3, S00-BH-J5, S00-BH-J7, or S00-BH-J9,corresponds to the data cable interposer of the selected clock.


069


1-344 RS/6000 SP MAPs


069 (continued)This is an HiPS 3.0 assembly.– The switch clock selected for this frame is from one of the following sources (with corresponding switch

data cables):

Internal : No cableExternal 1 : Sðð-BH-J3External 2 : Sðð-BH-J5External 3 : Sðð-BH-J7

– Go to Step 070

070

– Disconnect clock source data cable at S00-BH-J3, J5, J7, or J9, then reconnect to switch assembly.(This is done to eliminate clocking noise from cable.)

– Find a processor node in the “problem” frame which is usable for service. This will be used as the “test”processor node.


– Look for an SRN indicating a clock problem, i.e. “External clock” is one of the failing components.

Note: Do not exit from diagnostics at this time, as it may be used in the following steps.

Do the “css0” diagnostics fail with indication of a clock problem?Yes No

071

Diagnostics did not fail with indication of a clock problem.Is this the first time at this step?Yes No

072

– Go to Step 101 on page 1-350 to verify the fix.

073

– Disconnect the switch data cable corresponding to the selected clock at the switch assembly.– Run advanced diagnostics on “css0” on the “test” processor node. Do not perform cable wrap

test. Reference "Running Diagnostics in a Processor Node" in IBM RS/6000 SP: MaintenanceInformation, Volume 3, Locations and Service Procedures, as required.

– Look for an SRN indicating a clock problem, i.e., “External clock” is one of the failing components.

Note: Do not exit from diagnostics at this time, as it will be used in the following steps.


074

Problem is the clock selection in this switch assembly.– Replace the clock card in this switch assembly. Make sure to connect all cables connected

to the clock card.– Reinstall only the two switch data cables which are not selected and the switch data cable

to the “test” processor node. Do not connect the remaining switch data cables at this time.(Step 074 continues)



074 (continued)– Reconnect cables S00-BH-P1 and S00-BH-P2 at the rear of the switch assembly.– Put the circuit breaker at the front of the switch assembly in the On (‘1’) position.– Set the switch clock selections on the “problem” switch(es). Reference "Selecting Appro-

priate Switch Clocks" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locationsand Service Procedures for more information.

– Run advanced diagnostics on “css0” on the “test” processor node. Do not perform cablewrap test. Reference "Running Diagnostics in a Processor Node" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations and Service Procedures, as required.

– Look for an SRN indicating a clock problem, i.e., “External clock” is one of the failing com-ponents.

Note: Do not exit from diagnostics at this time, as it may be used in the following steps.


075

– Go to Step 093 on page 1-349 to replace the “problem” switch assembly.

076

Clock problem resolved.– Go to Step 101 on page 1-350 to verify fix.

077

Problem is not in the switch assembly.– Replace the switch data cable corresponding to the selected clock, reconnecting it at both switch

assemblies.– Go to Step 090 on page 1-348.

078

– Go to Step 079.

079

– Record current clock setting for the switch (internal/external).– From the control workstation, select the internal clock for this switch assembly.– Run advanced diagnostics on “css0” on the “test” processor node. Do not perform cable wrap test. Ref-

erence "Running Diagnostics in a Processor Node" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures, as required.

– Look for an SRN indicating a clock problem, i.e., “External clock” is one of the failing components.Do the “css0” diagnostics fail with indication of a clock problem?Yes No

080

– Determine whether this is an HiPS 2.0 or HiPS 3.0 switch assembly. An HiPS 3.0 switchassembly has no connectors at HPS-BH-J35 and HPS-BH-J36.


1-346 RS/6000 SP MAPs


080 (continued)Is this an HiPS 3.0 switch assembly?Yes No

081

This is an HiPS 2.0 switch assembly; therefore, we need to check data cable interposer con-nections. External clock sources 1, 2, and 3 correspond to top (S00-BH-J361), middle(S00-BH-362), and bottom (S00-BH-J363) connections at S00-BH-J36, respectively.– Either visually or by referencing Appendix A in RS/6000 SP: Maintenance Information

Volume 1, determine which bulkhead jack, S00-BH-J3, S00-BH-J5, S00-BH-J7, orS00-BH-J9, corresponds to the data cable interposer of the original clock selection recordedin Step 079 on page 1-346.

– Go to Step 083.

082

This is an HiPS 3.0 assembly.– The switch clock selected for this frame is from one of the following sources (with corresponding

switch data cables):

Internal : No cableExternal 1 : Sðð-BH-J3External 2 : Sðð-BH-J5External 3 : Sðð-BH-J7

– Go to Step 083.

083

– Check data cable interposer (if present) and switch data cable corresponding to the original externalclock selection at this switch assembly for any obvious problem such as a loose cable connection orswapped cable(s).

– Referencing Appendix A in RS/6000 SP: Maintenance Information Volume 1, determine other end ofswitch data cable, then check switch data cable and data cable interposer (if present) at this otherswitch assembly for any obvious problem such as a loose cable connection or swapped cable(s).

Do the switch data cables and any data cable interposers appear to be okay?Yes No

084

– Fix the obvious cable connection problem.– Go to Step 101 on page 1-350 to verify fix.

085

Try swapping the cable carrying the current clock with another cable carrying a clock to isolate theproblem.– If this is an HiPS 2.0 switch assembly, swap the data cable interposer connection at S00-BH-J361,

J362, or J363 with another data cable interposer at S00-BH-J361, J362, or J363 below.– If this is an HiPS 3.0 switch assembly, swap the data cable with another one connected at S00-BH-J3,

S00-BH-J5, or S00-BH-J7 below.– If this is an SPS switch assembly, swap the data cable with another one at S00-BH-J3, S00-BH-J4, or

S00-BH-J5 below.– Swap the switch data cable (HiPS 3.0 or SPS) or data cable interposer (HiPS 2.0) at the switch

assembly with another one. This should provide a good clock.(Step 085 continues)



085 (continued)– Reset the clock setting to that recorded in Step 079 on page 1-346.– Run advanced diagnostics on “css0” on the “test” processor node. Do not perform cable wrap test. Ref-

erence "Running Diagnostics in a Processor Node" in IBM RS/6000 SP: Maintenance Information,Volume 3, Locations and Service Procedures, as required.

– Look for an SRN indicating a clock problem, for example “External clock” is one of the failing compo-nents.


086

Problem is not in this switch assembly.– If this is an HiPS 3.0 or SPS switch assembly, skip to Step 088.– If this is an HiPS 2.0 switch assembly, swap the corresponding data connections at S00-BH-J3,

J5, J7, or J9.– Run advanced diagnostics on “css0” on the “test” processor node. Do not perform cable wrap

test. Reference "Running Diagnostics in a Processor Node" in IBM RS/6000 SP: MaintenanceInformation, Volume 3, Locations and Service Procedures, as required.

– Look for an SRN indicating a clock problem, for example “External clock” is one of the failingcomponents.


087

– Return all cables and interposers to original positions.– Replace the data cable interposer corresponding to the selected clock.– Go to Step 090.

088

– Return all cables and interposers to original positions.– Go to Step 077 on page 1-346.

089

Problem is the clock selection in this switch assembly.– Go to Step 074 on page 1-345.

090


– Look for an SRN indicating a clock problem, for example “External clock” is one of the failing compo-nents.


091

Interframe clock problem resolved.– Go to Step 101 on page 1-350 to verify fix.

1-348 RS/6000 SP MAPs


092

– Go to Step 093 to replace the “master-clock” switch assembly.

093

Problem with switch assembly.– Put the circuit breaker at the front of the switch assembly in the Off (‘0’) position.– Disconnect all switch data cables (also clock cables and data cable interposers, if present) from the

bulkhead of the switch assembly.Is this an HiPS-LC8 switch assembly?Yes No

094

– Replace the switch assembly. Refer to "Procedures for Switch Assemblies" in IBM RS/6000 SP:Maintenance Information, Volume 3, Locations and Service Procedures.

– If this is an HiPS 2.0 switch assembly, reconnect data cables.– Go to Step 100 on page 1-350

095

This is an 8-port switch.Is problem related to an individual switch port (processor node)?Yes No

096

– Replace the switch planar.– Reinstall all cables inside the switch assembly, then reinstall the top cover.– Reinstall the switch assembly.– Go to Step 100 on page 1-350

097

Problem may be tailgate cable inside switch assembly.– Remove switch assembly from the frame, then remove cover.– Locate tailgate cable corresponding to the failing port.– Disconnect tailgate cable at switch planar, then install a wrap plug on this end of the tailgate cable.– Reinstall the switch assembly in frame (do not install cover), then connect a switch data cable from an

available processor node.– Run advanced diagnostics on “css0” from this processor node, performing cable wrap test with cable

from adapter card through the tailgate cable to the wrap plug.Do diagnostics fail cable wrap test?Yes No

098

– Go to Step 096 to replace switch planar.

099

– Replace the tailgate cable– Reinstall top cover of switch assembly.(Step 099 continues)



099 (continued)– Go to Step 100

100

– Be careful to reconnect all cables according to the appropriate wiring chart or labels, and put wrap plugson any unused data ports (S00-BH-J3 through S00-BH-J34).

– Put the circuit breaker at the front of the switch assembly in the On (‘1’) position.– Go to Step 101 to verify replacement.

101

– Make sure any processor node(s) that was put in SERVICE mode is returned to NORMAL mode. Makesure all processor node(s) are IPLed completely in NORMAL mode.

– If any processor nodes that lost switch clocks before or during service (due to unplugging nodedata/clock cable, loss of clock at switch assembly connected to processor nodes, or so on), you willneed to include them in the following command. From the control workstation, enter:

dsh -w nodelist /usr/lpp/ssp/css/css_restart_node

OR, if all processor nodes have lost switch clocks, enter:

dsh -a /usr/lpp/ssp/css/css_restart_node

where nodelist is a list of node names separated by commas.

Example:

dsh -w fr2nð3,fr2nð4,fr3nð1 /usr/lpp/ssp/css/css_restart_node

Attention: Issuing this command on processor nodes that did not lose a clock may cause unpredictableresults, possibly requiring re-IPL.

– Have customer verify that the switch code is running on all processor nodes OR from the control work-

station, enter:

Estart

– Check /var/adm/SPlogs/css/out.top file.– Go to Step 001 on page 1-322 to verify that there are no other switch problems.

1-350 RS/6000 SP MAPs

MAP 0550: Dependent Node

MAP 0550: Dependent NodeA dependent node is a general term which refers to a switch adapter installed externally to the 9076 SP,but connected to the SP switch. In the current implementation, a dependent node refers to each RS/6000SP Switch Router Adapter installed in the RS/6000 SP Switch Router (machine type 9077). There may beseveral SP Switch Router Adapters (dependent nodes) in each SP Switch Router, but each occurrence iscalled a dependent node.

This MAP resolves problems specific to switch communication between the SP Switch Router Adapter andthe SP switch. For any other problem with the SP Switch Router, refer to the "SP Switch Router AdapterGuide" or other documentation supplied with the SP Switch Router.

Note: If there are multiple SP Switch Router Adapters in the system, you can find out configuration infor-mation and identify them by using the following commands:

SDRGetObjects DependentNode (returns more information)

SDRGetObjects DependentAdapter (returns IP address and netmask)

By referring to the dependent node_number, you can identify the location of the SP Switch RouterAdapter as follows:

"reliable_hostname" indicates hostname of the SP Switch Router

"extension_node_identifier" indicates two-digit slot number of the SP Switch Router Adapter inthe SP Switch Router.

001

Problem detected with switch communication to a dependent node.– Check for an obvious problem with the switch cable between the switch assembly and the SP Switch

Router Adapter card, such as a loose or broken cable.– Fix any obvious problem.Was there an obvious problem?Yes No

002

No obvious problems exist.– Make sure the system administrator has performed problem determination procedures in the

RS/6000 SP: Diagnosis and Messages Guide and/or checked the configuration of the SP SwitchRouter Adapter.

Was the customer able to fix a configuration problem?Yes No

003

Continue service with the SP Switch Router (or SP Switch Router Adapter).– If you are responsible for the SP Switch Router, check connectivity to the SP using SP

Switch Router Adapter Guide.Was there a problem found and corrected with the SP Switch Router or SP SwitchRouter Adapter?Yes No

004


005


MAP 0550: Dependent Node

Problem was resolved.– Go to Step 007 to verify the fix.

006

Problem was resolved.– Go to Step 007 to verify the fix.

007

Problem may have been resolved by a fix.– Issue Eunfence command for the dependent node.– Issue SDRGetObjects switch_responds to see if the value of "switch_responds" is "0" for this

dependent node.Does "switch_responds" show a value of "0" for this dependent node?Yes No

008

Problem was resolved.– If there are other switch problems, return to “MAP 0540: Switch Function” on page 1-322; other-

wise, go to “MAP 0570: End of Call” on page 1-357.

009

Problem was not resolved.– Go to Step 002 on page 1-351.

010

– Replace the SP switch cable between this SP Switch Router Adapter and the SP switch.– Issue an Eunfence command for this dependent node to attempt to bring this adapter on-line.– Issue SDRGetObjects switch_responds to see if the value of "switch_responds" is "0" for this

dependent node.Does "switch_responds" show a value of "0" for this dependent node?Yes No

011

Problem was resolved.– If there are other switch problems, return to “MAP 0540: Switch Function” on page 1-322; other-

wise, go to “MAP 0570: End of Call” on page 1-357.

012

No problem was found with the SP Switch Router or SP Switch Router Adapter.– Call next level of support. If the switch assembly must be replaced, go to Step 093 on page 1-349 to

replace the SP switch assembly.

1-352 RS/6000 SP MAPs

MAP 0560: Block Multiplexer Channel Adapter Feature (BMCA)

MAP 0560: Block Multiplexer Channel Adapter (BMCA)Notes:

1. The cables and wrap plugs that are shipped with the BMCA feature are different than the standardRS/6000 cables and wrap plugs.

2. Ensure that customer jobs have been canceled on the BMCA feature and the associated I/Oaddresses are varied off-line before servicing.

3. If multiple nodes are failing on the same channel, that parallel channel on the mainframe should bevaried off-line.

4. The maximum allowable adapters on a chain is eight.

5. Refer to Diagnostic Information for Micro Channel Bus Systems (SA38-0532), Map 0020 (ProblemDetermination Procedure), Step 3, for additional information on performing diagnostics.

Figure 1-37. BMCA Cabling to Single Processor Node

001

Problem detected with the BMCA feature.Are multiple processor nodes failing on this channel?Yes No

002

Only one processor node failing.– Put the cable connector's Select-out Bypass Switch of the suspect BMCA card in the Bypass (“B”)

position.– Remove cable from the suspect BMCA card connector.– Install the BMCA card wrap plug P/N 71F1184 on the card connector.– Run advanced diagnostics on this BMCA (“cat0”) through the card wrap test.Did the card and card wrap diagnostics complete successfully?Yes No

003

– Replace the BMCA card.– Install the BMCA card wrap plug P/N 71F1184 on the new card connector.– Run advanced diagnostics on this BMCA (“cat0”) through the card wrap test.(Step 003 continues)



003 (continued)Did the card and card wrap diagnostics complete successfully?Yes No

004


005

Problem resolved. Restore node to channel.– Remove the card wrap plug P/N 71F1184 from the adapter connector.– Install cable on the new BMCA card connector.– Restore the Select-out Bypass Switch to the Select (“S”) position.– Inform the Customer that the channel resource is available.– Go to “MAP 0570: End of Call” on page 1-357.

006

Potential cable problem exists. Restore node to channel.– Remove the card wrap plug P/N 71F1184 from the adapter connector.– Install cable back on the BMCA card connector.– Restore the Select-out Bypass Switch to the Select (“S”) position.– Continue at Step 007.

007

Potential cable problem exists. Channel interface must be opened.– Ensure that customer has no application on the failing channel, and the parallel channel on the

mainframe is varied off-line.– Trace and note the cabling connections of the BMCA cabling from the cable entering the frame (P/N

54G3361) to each succeeding node in the daisy chain until the terminator is reached. Make special noteof which processor node is the “first” on the chain; it should be the one with cable P/N 54G3361(Y-cable with one nine-foot leg) attached.

– Verify that the cable at each adaptor has the Select-out Bypass Switch (labeled S/B) in the Select (“S”)position.

– Check for obvious problems in the cabling chain, such as loose cable connections or missing terminator.Were all the BMCA interface cables and terminators properly connected?Yes No

008

– Fix the obvious problem.Does this correct the customer reported problem?Yes No

009

– Go to Step 011 on page 1-355 to test cabling.

010

Problem resolved.– Inform the Customer that the channel resource is available.(Step 010 continues)

1-354 RS/6000 SP MAPs



011

Cablingto IBMSystem/370orSystem/390

Bus

TagCableP/N 68F7211

CableP/N 54G3361

TerminatorP/N 6473048

CableP/N 54G3360

CableP/N 54G3360

Figure 1-38. BMCA Cabling to Multiple Processor Nodes

No obvious cabling problem found. Prepare to test interface cables.– Remove the channel-attach (mainframe) cables from the end of cable P/N 68F7211, which is farthest

from the frame.– Install wrap plugs, P/N 8575337 (Bus) and P/N 8575338 (Tag) on that end of the cable P/N 68F7211.– Go to Step 012.

012

– Test all RS/6000 SP BMCA cables and terminator on this channel interface.– Run advanced diagnostics on the suspect BMCA (“cat0”), including the cable wrap test.Did the diagnostics fail?Yes No

013

Have diagnostics been run from all failing nodes?Yes No

014

– Select next failing BMCA node as the suspect node.– Go to Step 012 to continue testing cables.

015

All RS/6000 SP adapters and cables test okay.– If all processor nodes but one fail on this channel, suspect the good BMCA. It may be causing the

others to show errors.– Problem might exist with channel IOCDS or application defined BMCA addressing.– Make sure all BMCA nodes on this channel are using different address ranges(Step 015 continues)



015 (continued)– Problem may exist with channel interface cables to host or attaching unit.– Remove wrap plugs, P/N 8575337 (Bus) and P/N 8575338 (Tag) from end of the cable P/N

68F7211.– Reconnect the channel-attach (mainframe) cables to the end of cable P/N 68F7211, which is far-

thest from the frame.– Continue analysis from mainframe channel or call next level of support.

016

Problem was detected with the BMCA 78-pin cables or terminator connecting the BMCA cards.– Isolate failing cable by moving terminator, swapping or deleting cables from string.– Do not forget defective terminator or wrap plugs can cause failure.– Refer to Figure 1-38 on page 1-355, while isolating fault.Failing component isolated successfully?Yes No

017


018

– Replace defective component.– Restore cables, wrap plugs, and terminator to original configuration.– Rerun advanced diagnostics on the suspect BMCA (“cat0”) to verify repair.Did the card and cable wrap diagnostics complete successfully?Yes No

019

– Go to Step 016 to retest cables.

020

Problem resolved.– Remove wrap plugs, P/N 8575337 (Bus) and P/N 8575338 (Tag) from end of the cable P/N 68F7211.– Reconnect the channel-attach (mainframe) cables to the end of cable P/N 68F7211, which is farthest

from the frame.– Inform the Customer that the channel resource is available.– Go to “MAP 0570: End of Call” on page 1-357.

1-356 RS/6000 SP MAPs

MAP 0570: End of Call

MAP 0570: End of CallThis MAP is referenced upon completion of a service action. This MAP indicates the information to belogged, actions required by the customer to utilize fix, and actions required to verify that the hardware isleft in a usable state.

001

– Check the following table for any further steps required to complete service actions.

Service Action Steps to Complete Recovery

� Processor node fixed disk replaced� Processor node I/O planar replaced� Processor node Micro Channel adapter

replaced� Node supervisor power was removed during

service.

Have customer perform the appropriate steps in IBMRS/6000 SP: Administration Guide under “RecoveryProcedures.”

– Continue at Step 002

002

Service action was taken.Was a Field Replaceable Unit (FRU) replaced, or any service action taken (such as a cable/cardreseated), and the fix verified?Yes No

003

No FRU was replaced and verified.Was service action an EC or regular upgrade?Yes No

004

– Record action taken in account log.– Open a Tracking Problem Management Record (PMR) through support center (RETAIN).– Record time service action as appropriate service code Incomplete against Machine

Type/Serial Number.– Go to Step 009 on page 1-358 and refer to Table 1-14 on page 1-358 for proper serial

number to record the service call against.

005

– Record action in account log against all appropriate nodes or the EC number.– Go to Step 009 on page 1-358 and refer to Table 1-14 on page 1-358 for proper serial number

to record the EC against.

006

– Verify the replaced FRU is functioning properly by performing "System Verification Tests" from the diag-nostics menu.

– Record action completed in the account log.– Properly account for parts utilized in this service call.(Step 006 continues)


MAP 0570: End of Call

006 (continued)– Record time as complete on Machine Type/Serial Number. Refer to Table 1-14 for proper serial number

to record the service action against.– Record hardware addresses for any Ethernet card(s) or I/O planar card(s) replaced for updating custom-

er's bootptab.info and/or other file(s).– Check conditions in table of Step 002 on page 1-5.Are any of the conditions in table of Step 002 on page 1-5 present?Yes No

007

Service call is complete.– Unfence any node(s) that were fenced for service action. See "Viewing Switch Partitions" in IBM

RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures for moreinformation.

– Check "Preventive Maintenance" in IBM RS/6000 SP: Maintenance Information, Volume 3,Locations and Service Procedures for preventive maintenance procedures.

008

Further service action is required.– Go to Step 002 on page 1-5.

009

–

Table 1-14. Proper Serial Number to Record

Fault Isolated To Serial Number to Record

RS/6000 SP

� Base Frame:

– Power distribution – Frame supervisor – Supervisor harness – Frame cabling

� Switch Feature:

– Multi-Switch Frame (F/C2030/1)

– Switch assembly – Switch adaptors – Switch cables

� Processor node components

Controlling frame serial number (see note)

Other:

� Control workstation� File server (not included in

RS/6000 SP frame network)

Do NOT record time against RS/6000 SP when trouble is isolated toanother Machine Type.

Note: Controlling frame serial number is the RS/6000 SP Model 20X, 30X, or 40X frame of a multiple frameconfiguration.

1-358 RS/6000 SP MAPs

MAP 1520 Main Power (MAP 1520 Reference Point)

MAP 1520: Main Power001

– If you came to this book looking for a 1520 Main Power MAP, go to one of the following MAPs:

Single node problem “MAP 0130: Processor Node” on page 1-30

Multiple node problem “MAP 0370: Main Power” on page 1-222


MAP 1540: Minimum Configuration (MAP 1540 Reference Point)

MAP 1540: Minimum Configuration001

–

If you came to this book looking for a 1540 Minimum Configuration MAP, go to one of the followingMAPs:

Thin/wide nodes “MAP 0130: Processor Node” on page 1-30

High nodes “MAP 0280: 604 or 604e High Node Minimum Configuration” on page 1-145

332 MHz SMP node “MAP 0320: 332 MHz SMP Node Minimum Configuration” on page 1-186

POWER3 SMP node “MAP 0360: POWER3 SMP Thin and Wide Node Minimum Configuration” onpage 1-217

1-360 RS/6000 SP MAPs

Index

Numerics0, HiPS 3.0, or HiPS-LC8'.high-performance switch 1-2

See also HiPS 2120 and 160 MHz thin node high level diagram 1-41120 or 160 MHz thin processor node environment MAP

flowcharted 1-60332 MHz SMP node control MAP

flowcharted 1-177332 MHz SMP node high level diagram 1-44332 MHz SMP node MAP

flowcharted 1-30332 MHz SMP node power MAP

flowcharted 1-169332 MHz SMP processor node environment MAP

flowcharted 1-160604 and 604e high processor node MAP

flowcharted 1-30604 or 604e high node high level diagram 1-43

Aac wiring diagram of RS/6000 SP PDU 1-227audience of this book xv

BBMCA MAP

flowcharted 1-353

Ddc power loss from bulk power supply MAP

flowcharted 1-250Dependent Node MAP

flowcharted 1-351

Eend of call MAP

flowcharted 1-357ESD

procedures xrequirements x

Ethernet LAN MAPflowcharted 1-288

Ffemale wrap plug 1-299frame environment MAP

flowcharted 1-262

front chassis cable, SPS 1-305

Hhigh performance switch assembly high-level

diagram 1-295high processor node control MAP

flowcharted 1-135high processor node environment MAP

flowcharted 1-124high processor node power MAP

flowcharted 1-130HiPS switch supervisor control cable 1-306

Llockout/bagout procedure

tasks described 1-3lockout/tagout procedure

tasks described 1-2

Mmain power MAP

flowcharted 1-222main power switch MAP

flowcharted 1-247male wrap plug 1-299

NNetwork MAP

flowcharted 1-286

OOpen in 48 V dc Distribution MAP

flowcharted 1-283

PPDU + 24 V dc circuit diagram 1-244PDU 48 volts distribution diagram 1-257PDU MAP

flowcharted 1-225power distribution unit 1-2

See also PDUPOWER3 SMP thin and wide node control MAP

flowcharted 1-208POWER3 SMP thin and wide node high level

diagram 1-45POWER3 SMP thin and wide node power MAP

flowcharted 1-200

Copyright IBM Corp. 1994, 1999 X-1

POWER3 SMP thin and wideprocessor node environ-ment MAP

flowcharted 1-191prerequisite knowledge for this book xvProcedures

ESD xprocessor IPL problem MAP

flowcharted 1-94processor node control MAP

flowcharted 1-74processor node function MAP

flowcharted 1-87processor node MAP

flowcharted 1-30purpose of book xv

task procedures overview xv

RRequirements

ESD xRS/6000 SP frame power diagram 1-225

Sscalable electrical power base unit 1-2

See also SEPBUscalable POWERparallel switch assembly high-level

diagram 1-296SEPBU MAP

flowcharted 1-265SEPBU power control interface MAP

flowcharted 1-280short in 48 V dc power distribution MAP

flowcharted 1-257SPS front chassis cable 1-305SPS switch inner chassis cable 1-305start of service call

starting point for maintenance 1-4supervisor bus MAP

flowcharted 1-19supervisor power + 12 V dc diagram 1-237supervisor power 12 V dc problem MAP

flowcharted 1-237supervisor power 24 V dc problem MAP

flowcharted 1-244supervisor power problem MAP

flowcharted 1-229supervisor subsystem diagram (PDU) 1-11, 1-12supervisor subsystem diagram (SEPBU) 1-13supervisor subsystem MAP

flowcharted 1-10switch assembly environment MAP

flowcharted 1-301switch assembly MAP

flowcharted 1-294

switch assembly power MAPflowcharted 1-313

switch connectivity diagram 1-319switch function MAP

flowcharted 1-322switch inner chassis cable, SPS 1-305switch supervisor control cable, HiPS 1-306

Tthin node 2 high level diagram 1-40thin node high level diagram 1-39thin node supervisor control cable 1-53, 1-64thin processor node dc short/open MAP

flowcharted 1-84thin processor node environment MAP

flowcharted 1-50thin processor node MAP

flowcharted 1-30thin processor node power MAP

flowcharted 1-69trademarks ix

Uuser's responsibilities xv

Wwho should use book xvwide node high level diagram 1-42wide node supervisor control cable 1-102wide processor node control MAP

flowcharted 1-110Wide Processor Node dc Short/Open MAP

flowcharted 1-120wide processor node environment MAP

flowcharted 1-98wide processor node MAP

flowcharted 1-30wide processor node power MAP

flowcharted 1-105wrap plugs 1-299

X-2 RS/6000 SP MAPs

Communicating Your Comments to IBM

RS/6000 SPMaintenance Information Volume 2,Maintenance Analysis Procedures

Publication No. GA22-7376-01

If you especially like or dislike anything about this book, please use one of the methods listed below to send yourcomments to IBM. Whichever method you choose, make sure you send your name, address, and telephone numberif you would like a reply.

Feel free to comment on specific errors or omissions, accuracy, organization, subject matter, or completeness of thisbook. However, the comments you send should pertain to only the information in this manual and the way in whichthe information is presented. To request additional publications, or to ask questions or make comments about thefunctions of IBM products or systems, you should talk to your IBM representative or to your IBM authorizedremarketer.

When you send comments to IBM, you grant IBM a nonexclusive right to use or distribute your comments in any wayit believes appropriate without incurring any obligation to you.

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� If you prefer to send comments by mail, use the RCF at the back of this book.

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Reader's Comments — We'd Like to Hear from You

RS/6000 SPMaintenance Information Volume 2,Maintenance Analysis Procedures

Publication No. GA22-7376-01

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